A runway safety system that allows air traffic controllers to track surface movement of planes and vehicles “did not alert” when an Air Canada jet collided with a Port Authority airport vehicle at New York City’s LaGuardia Airport, according to the National Transportation Safety Board.

Sunday night’s on-the-ground crash killed both pilots, left dozens injured and prompted LaGuardia to shut down for more than 12 hours.

The pilots who died were identified as Captain Antoine Forest and First Officer Mackenzie Gunther.

The collision happened shortly after the Air Canada flight, which was carrying four crew members and 72 passengers, touched down from Montreal around 11:45 p.m., according to Port Authority Executive Director Kathryn Garcia.

The plane, which was operated by Jazz Aviation, struck a rescue-and-firefighting vehicle responding to another aircraft, officials said, with the NTSB noting that the fire truck didn’t have a transponder.

Preliminary data shows the plane was traveling between 93 and 105 mph when it impacted the fire truck, FlightRadar24 told ABC News.

At least 41 people were taken to hospitals, officials said. One flight attendant, Solange Tremblay, was thrown from the plane and suffered fractures to her leg, her daughter told Canadian news station TVA Nouvelles, calling her survival a “miracle.”

As the NTSB investigates the crash, NTSB chair Jennifer Homendy said there were two people in the air traffic control tower cab at the time of collision: the local controller and the controller in charge.

Two controllers is “the standard operating procedure for LaGuardia for the midnight shift,” Homendy at a news conference on Tuesday.

She said the NTSB has been concerned about fatigue from the midnight shift in past investigations, but stressed that there is no evidence of fatigue so far in this case.

LaGuardia has a runway safety system allowing air traffic controllers to track surface movement of planes and vehicles, but that system “did not alert,” Homendy said.

The analysis found that the system “did not generate an alert due to the close proximity of vehicles merging and unmerging near the runway, resulting in the inability to create a track of high confidence,” Homendy said.

The reason it did not alert is because the fire truck was not equipped with a transponder, so the system was unable to track it, the NTSB said. The truck is not required to have a transponder, but Homendy noted that trucks do at some other airports.

There is no indication yet if the pilots saw the fire truck on the runway, Homendy said, noting that the NTSB is still analyzing the cockpit voice recorder.

Asked if the truck turned or hit the brakes, Homendy said, “We have to do some further investigation on that, including interviews of both firefighters that were on board.”

The NTSB also outlined the timeline of the final three minutes of the cockpit voice recorder, noting when the truck requested to cross the runway, when the tower cleared the truck to cross, and both times the tower instructed the truck to stop.

Homendy said the NTSB is still working to determine what happened at the air traffic controllers’ shift change around 10:30 p.m.

She also noted that the “controller was still on duty for several minutes” after the crash. Usually in that situation the controller would be relieved, so the NTSB is investigating if anyone was available to relieve them, Homendy said. That controller will be interview Tuesday afternoon, she said.

Homendy stressed that the NTSB “rarely, if ever, investigate[s] a major accident where it was one failure” — usually “many, many things” went wrong, she said.

“Our aviation system is incredibly safe because there are multiple, multiple layers of defense built in to prevent an accident,” she explained.

One passenger on the flight, Joe, said that as the plane was landing, he noticed some emergency vehicles on the tarmac.

“Right before the impacts, we felt something, maybe like an emergency brake that was pulled, or some kind of hard stop, before we hit the truck,” Joe, who did not want to use his last name, told ABC News Live. “But prior to that, there was nothing out of the ordinary that I had noticed.”

“Because I was seated in the emergency aisle, somebody in the plane had shouted, ‘Emergency exits open,'” Joe said. “So at that time, I pulled the lever down, attached the door, put it to the side of the plane, and a few of us had exited through the emergency exit onto the wing of the plane. And FDNY and Port Authority Police directed us to slide down the wing. … It was very low to the ground and easy to get off.”

Joe, who was on the flight with his fiancé, said Monday evening that they were “pretty shaken up, still kind of in shock.”

“And just heartbroken for, obviously, the pilots, and all those that are injured,” Joe said.

He said he believes the pilots “saved many lives on that flight — and my heart’s just broken for them.”

Antoine Forest has been identified by his family as one of the two pilots killed.

LaGuardia shut down after the crash and slowly resumed flights at 2 p.m. Monday. The runway where the collision occurred will remain closed until 7 a.m. Friday, according to the Federal Aviation Administration.

ABC News’ Ayesha Ali contributed to this report.

A major legal battle over the ability of asylum seekers to apply for refuge in the U.S. at ports of entry along the border with Mexico lands at the Supreme Court on Tuesday, as the Trump administration pushes for broad authority to turn migrants away regardless of their claims.

From the start of his second term, President Donald Trump has effectively blocked the entry of all noncitizens at the southern border, including those seeking safety and protection from credible fears of violence and persecution.

Immigrant advocates challenging the approach in multiple lawsuits allege it violates the Immigration and Nationality Act mandate that noncitizens who are “physically present in the U.S.” or who “arrive in the U.S. … at a designated port of arrival” must be allowed to apply for asylum.

The dispute largely turns on competing interpretations of what it means to “arrive in” the country.

“In ordinary English, a person ‘arrives in’ a country only when he comes within its borders,” Trump Solicitor General John Sauer argues in a court filing. “A person does not ‘arrive in the United States’ if he is stopped in Mexico.”

Nicole Ramos, border rights project director at Al Otro Lado, an immigrant rights group and plaintiff in the case, says Congress had a more nuanced view when it drafted the law following the U.S. failure to accept Jewish refugees from the Holocaust.

“The right to seek asylum at the border is a legal right and a moral right,” Ramos said. “The stakes are not theoretical. They are measured in lives.”

Trump has invoked multiple legal authorities to support his current border crackdown.

At issue in the case being argued Tuesday is the so-called “turn back” policy from Trump’s first term that kept asylum seekers waiting in Mexico as a method of “metering” access at border crossings that faced overcrowding.

While the administration voluntarily discontinued the practice in 2021 after a lower court deemed it unlawful, the government insists it has broad discretion to regulate the border and now wants the justices to approve the ability to reinstate the policy if necessary.

“Administrations of both major parties have opposed the [lower court] decision, which deprives the Executive Branch of a critical tool for addressing border surges and preventing overcrowding at ports of entry,” Sauer wrote. “This Court should reverse.”

Melissa Crow, director of litigation at the Center for Gender & Refugee Studies, an immigrant rights group representing several asylum-seeker plaintiffs, said a ruling for the administration could have a major impact, even if not immediate.

“We have no doubt the administration is seeking a decision that will give them even more leeway to restrict the rights of people seeking asylum,” Crow said.

Tens of thousands of asylum seekers who arrived at the U.S. southern border during Trump’s first term were forced to remain in Mexico for weeks or months in sometimes harrowing conditions in hopes they might have a chance to be interviewed about their fears of persecution.

One of those migrants was Benito, a Mexican asylum seeker who declined to give his last name to protect his identity and spoke through a translator at an event hosted by Al Otro Lado.

“I was partially tortured, had a lot of lesions, and emotional harm, and traumas and I’m still healing from that,” he said of the violence he was trying to escape. “I knew I could apply for asylum in that moment, on the side of Mexico, and so I did everything correctly. I came close; I told the [U.S.] immigration agents that I needed to apply for asylum because I was scared and thought I would be killed.

“I had scars on my body, on my face, and my head,” he said, “but they said to me that they couldn’t help me, couldn’t accept me.”

The court is expected to issue a decision on the Trump administration’s bid to resurrect the “metering” and “turn back” policy by the end of June.

COPENHAGEN, Denmark — Danish voters went to the polls Tuesday in a general election, with Prime Minister Mette Frederiksen seeking a third term at the helm of the Scandinavian country after a standoff with U.S. President Donald Trump over the future of the kingdom’s semiautonomous territory of Greenland.

More than 4.3 million people are eligible to have their say in the vote for the new Folketing, or parliament, in Copenhagen, which is elected for a four-year term.

Frederiksen called the election last month, going to the country several months before she had to in apparent hopes that her resolute image in the crisis over Greenland would help her with voters in the European Union and NATO member country.

In her second term, her support had waned as the cost of living rose — something that, along with pensions and a potential wealth tax, has been a prominent campaign issue.

The 48-year-old center-left Social Democrat is known for strong support of Ukraine in its defense against Russia’s invasion and for a restrictive approach to migration — continuing a tradition in Danish politics that now goes back two decades.

Seeking to counter pressure from the right and pointing to a possible surge in migration because of the Iran war, Frederiksen announced proposals this month that include a potential “emergency brake” on asylum and tighter controls on criminals who lack legal residence. Her government had already unveiled a plan to allow the deportation of foreigners who have been sentenced to at least one year in prison for serious crimes.

Two center-right challengers hope to oust Frederiksen as prime minister. One is in her current government — Defense Minister Troels Lund Poulsen of the Liberal, or Venstre, party, which headed several recent administrations.

The other is Alex Vanopslagh, 34, of the opposition Liberal Alliance, which calls for lower taxes and less bureaucracy, and for Denmark to abandon its refusal to use nuclear power. But a recent admission from Vanopslagh to taking cocaine earlier in his time as party leader may have dented his chances.

Further to the right, the anti-immigration Danish People’s Party looks well-placed to bounce back from a very weak showing at the last election in 2022.

No single party is expected to come anywhere near winning a majority. Denmark’s system of proportional representation typically produces coalition governments, traditionally made up of several parties from either the “red bloc” on the left or the “blue bloc” on the right, after weeks of negotiations.

Frederiksen’s outgoing three-party administration was the first in decades to straddle the political divide. It remains to be seen whether this election will result in a repeat, with the centrist Moderate party of Foreign Minister Lars Løkke Rasmussen possibly acting as the kingmaker.

Greenland, which took up much of the government’s energy in recent months, hasn’t been a significant issue in the campaign because there is broad agreement on its place in the kingdom.

Frederiksen warned in January that an American takeover of Greenland would amount to the end of NATO. But the crisis has simmered down, at least for now.

After Trump backed down on threats to impose tariffs on Denmark and other European countries that opposed the U.S. taking control of the vast Arctic island, the U.S., Denmark and Greenland started technical talks on an Arctic security deal.

Denmark’s single-chamber parliament has 179 seats. Of those, 175 go to lawmakers from Denmark itself and two each for representatives from thinly populated Greenland and the kingdom’s other semiautonomous territory, the Faroe Islands.

___

Moulson reported from Berlin.

A U.S. Park Police officer was shot in Washington, D.C., while on duty, according to a statement from the agency. 

Park Police said the officer was shot at 7:30 p.m. on Monday in Southeast Washington on Queens Stroll Pl.

The officer has been transported to a local hospital, officials said.

The circumstances of the shooting are unclear. A Park Police spokesperson told ABC News the officer has non-life-threatening injuries.

Attorney General Pam Bondi said on X that she has spoken to D.C. Mayor Muriel  Bowser and Metropolitan Police Chief Jeffery Carroll and was briefed on the shooting.

“Please pray for the officer’s recovery,” the attorney general said.

This is a developing story. Please check back for updates.

Sen. Chuck Schumer, the chamber’s top Democrat, said Monday that the ongoing Department of Homeland Security funding negotiations with the White House and Republicans have been “constructive,” but emphasized that “there’s considerably more work to be done.”

“We’re ready to meet with the White House today to keep talking,” Schumer said after talks occurred all weekend. “In fact, we were going to meet this morning with [Border Czar] Tom Homan, but apparently the White House pulled that meeting because of Donald Trump’s temper tantrum.”

Schumer said Trump is trying to “sabotage negotiations” as lawmakers work to hammer out a deal to end the DHS partial shutdown, as lines grow at airports across the country and tens of thousands of workers, including Transportation Security Administration officers, go without pay.

Schumer said Trump “is the one standing in the way” of paying TSA workers after he directed Republicans over the weekend to not make a deal with Democrats on DHS funding without also passing his voting and gender-affirming care legislation, the SAVE America Act. 

“The SAVE Act does not have the votes to pass this chamber, and Democrats will fight it every step of the way,” Schumer said on the Senate floor Monday. “The SAVE Act has nothing to do with DHS Homeland Security. It has nothing to do with TSA workers or making sure ICE follows the same rules as every other federal law enforcement agency in the country.”

During a crime-focused roundtable in Memphis on Monday, Trump said he is “suggesting strongly to the Republican Party” to avoid making “any deal on anything.”

“Do not settle with Democrats and let them out of this hole that they buried themselves in. You have to take the votes in the Senate to approve. You need votes to approve,” Trump said, also repeating his calls for the Senate to abolish their 60-vote filibuster to pass the legislation with a simple majority.

Trump encouraged Republicans to stay in town for the upcoming recess to hammer out a deal: “Don’t worry about Easter, going home.”

Senate Majority Leader John Thune said Monday that the negotiations are a very fluid situation, which will hopefully become more clear in the next two days.

Monday’s developments come after Trump on Sunday rejected a potential off-ramp to the DHS shutdown after conversations between the White House and Senate Republican leaders, according to multiple sources who spoke with ABC News.

Trump on Sunday shot down funding every agency inside the department — except Immigration and Custom Enforcement, according to the sources.

Senate Republicans expressed concern the approach could give Democrats the upper hand in negotiations and have an impact on critical roles that ICE plays in addition to immigration enforcement, like the work done by Homeland Security Investigations.

A source familiar with the conversation told ABC News that White House aides had briefed Trump on the proposed DHS off-ramp before a phone call between Thune and the president on Sunday, hoping that the pitch could break the impasse that has stretched on for 38 days so far.

Senate Democrats — who are blocking DHS funding and demanding ICE reforms — have repeatedly tried and failed to pass legislation to fund agencies inside the department, excluding immigration enforcement.

Democrats’ efforts have been blocked by Republican leadership who have publicly argued everything should be funded at once — despite debating a different plan behind closed doors, according to sources.

But as the chaos unravels at airports across the country — including Trump’s announcement over the weekend that he would send ICE agents to airports starting on Monday to assist TSA officers, some Senate Republicans say they have seen enough.

“The Democrats are amenable to opening up everything in DHS but ICE. I think we should accept that,” Republican Sen. John Kennedy told reporters Sunday afternoon. “The very next day, we should file a budget resolution to reconciliation that funds ICE as we deem appropriate. We don’t need Democratic votes to do that.”

As the partial shutdown drags on, ICE has money to continue its operations, following a $75 billion cash infusion over five years in the “One Big Beautiful Bill Act” that Trump signed into law last summer. And ICE agents continue to be paid, while their other DHS colleagues are not.

House Minority Leader Hakeem Jeffries and 174 of his rank-and-file Democrats have signed onto a discharge petition that would force Speaker Mike Johnson to consider a bill to fund all of DHS, minus ICE. It requires 218 signatures in total to be considered. 

A top congressional aide stressed that Republican leaders are exploring a number of options.  

Lawmakers have expressed optimism that “progress” is being made in DHS funding talks, particularly after senators were forced to stay in town this weekend for an unrelated series of votes.

ABC News’ Lalee Ibssa, Isabella Murray and Michelle Stoddart contributed to this report.

President Donald Trump, after postponing U.S. strikes on Iran’s energy infrastructure citing new negotiations with Tehran, said on Monday that talks will continue and that there are “major points of agreement.”

“They’re not going to have a nuclear weapon, that’s number one,” Trump told reporters in Florida.

“That’s number one, two and three. They will never have a nuclear weapon,” the president said. “They’ve agreed to that,” he added.

According to Iranian state media, Iran’s Parliament Speaker Mohammad Qalibaf said “no talks with the U.S. have taken place; reports claiming otherwise are fake news aimed at influencing financial and oil markets and distracting from the challenges facing the U.S. and Israel.”

Iran has previously committed not to build a nuclear weapon as part of negotiations with the West, yet continued to enrich nuclear material to levels nearing weapons grade.

Iran’s intent to build a nuclear weapon, according to Trump, was a central justification for the war.

This was despite the U.S. intelligence community’s assessment that Iran was not pursuing a nuclear weapon in the wake of last summer’s Operation Midnight Hammer, which Trump said “obliterated” the country’s nuclear weapons program. 

When asked on Monday how the U.S. would get Iran’s enriched uranium if these talks go well, Trump suggested Americans would go in to seize it. Experts previously told ABC News that a large American force on the ground would likely be needed to take the nuclear material, which is believed to be buried deep underground at facilities bombed by the U.S. last year.

“Very easy, if we have a deal with them, we’re going down and we’ll take it,” Trump said.

Trump also said he wanted to see a “very serious form of regime change” in Iran.

Over the weekend, Trump had issued an ultimatum to Iran to reopen the critical Strait of Hormuz within 48 hours or face major attacks on its power plants and other energy sites.

Trump changed course on Monday morning, announcing on social media that he ordered the Defense Department to postpone the strikes for five days following what he described as productive conversations about ending the war.

Iran’s foreign ministry denied talks with the U.S., Iran’s semi-official Mehr News Agency reported.

Trump told reporters that the U.S. is talking with a “top person” in Iran, but not the new supreme leader, Mojtaba Khamenei.

The president did not offer specifics on who exactly the U.S. is negotiating with, only saying he is “a man who I believe is the most respected.” Just on Friday, Trump had said there was “nobody to talk to” after U.S. and Israeli strikes killed much of the Iranian leadership.

Steve Witkoff, White House special envoy, and Jared Kushner, the president’s son-in-law, led the talks for the U.S., Trump said. The president added that the talks went “perfectly” and would continue by phone on Monday. He said that a meeting would take place “soon.”

“We’re doing a five-day period. We’ll see how that goes, and if it goes well, we’re going to end up with settling this, otherwise we just keep bombing our little hearts out,” Trump added.

Trump said there is a “very serious chance of making a deal,” but that he is not “guaranteeing anything.”

“All I’m saying is we are in the throes of a real possibility of making a deal,” he said. “And I think, if I were a betting man, I’d bet for it. But again, I’m not guaranteeing anything.”

Trump, when asked whether he believed Israel would abide by any peace deal, said that Israel would be “very happy.”

Trump’s pause on attacks on Iranian energy infrastructure prompted a positive reaction in the stock and oil markets. The Dow Jones Industrial Average soared on Monday, and the price of oil dropped about 10% to about $90 a barrel.

Still, Iran’s stranglehold on the Strait of Hormuz remains in place.

When asked who will be in control of the strait after the conflict, Trump said it would be “jointly controlled.”

“Maybe me, me and the next ayatollah, whoever that is,” the president said.

Meanwhile, thousands more U.S. Marines and several Navy ships are heading to the Middle East, and the Pentagon is seeking $200 billion in supplemental funding.

When asked whether the administration would still request that $200 billion if these talks end the war, Trump replied, “It would be nice to have.”

Saturday saw the highest call-out rate of TSA officers at airports since the partial Department of Homeland Security shutdown began, according to exclusive data from the Transportation Safety Administration first obtained by ABC News. 

Over 3,250 officers called out Saturday, March 21, according to TSA data, accounting for 11.51% of the scheduled workforce. 

Airport security lines are growing nationwide as TSA officers, who haven’t received a paycheck for over three weeks, call out of work. Over the weekend, President Donald Trump posted on his social media platform that he will deploy Immigration and Customs Enforcement (ICE) agents to airports beginning Monday unless Democrats agree to a funding package to end the DHS shutdown. 

Democrats are demanding reforms to ICE and Customs and Border Protection policies before they will vote to fund the DHS.

Transportation Secretary Sean Duffy said Sunday on ABC’s “This Week” that ICE agents are trained and can assist with airport security. ICE has remained funded through appropriations from the Trump’s tax and spending bill passed last summer, while key DHS agencies like TSA, the Federal Emergency Management Agency and the Coast Guard are left unfunded.

Duffy said that ICE does have proper security training, but could also help by just managing lines.

ICE agents are expected to be at 14 airports nationwide, multiple sources familiar with the situation told ABC News. The number of airports ICE agents could be at could change, as plans are still being ironed out, according to sources.

“We’re simply there to help TSA do their job in areas that don’t need their specialized expertise, such as, you know, screening through the x-ray machine, not trained on that, we won’t do that,” White House Border Czar Tom Homan said Sunday on CNN’s “State of the Union.” “But there are roles we can play to release TSA officers from the non significant role, such as guarding an exit, so they can get back to the scanning machines and move people quicker.”

There was a nearly four-hour wait Sunday during the 11 a.m. hour to pass through TSA checkpoints at New York’s LaGuardia Airport, according to the TSA. 

Saturday, the airports with the highest TSA personnel call-out rates were William P. Hobby Airport in Houston, with 47.4%; George Bush Intercontinental Airport in Houston, with 42.4%; Louis Armstrong New Orleans International Airport, with 34.1%, Hartsfield-Jackson Atlanta International Airport, with 33.6%; and John F. Kennedy International Airport in New York, with 33.4%. 

Atlanta Mayor Andre Dickens said in a statement Sunday that he was informed that federal personnel from HSI and ICE will be deployed to Hartsfield-Jackson Atlanta International Airport beginning Monday morning. 

Federal officials said the deployment is not intended to conduct immigration enforcement, and all federal personnel will report directly to TSA, according to the statement.

The president of the union that represents TSA workers issued a statement Sunday blasting what he called the Trump administration’s “threat” to send ICE to airports. 

“ICE agents are not trained or certified in aviation security,” American Federation of Government Employees National President Everett Kelley in the statement. “TSA officers spend months learning to detect explosives, weapons, and threats specifically designed to evade detection at checkpoints – skills that require specialized instruction, hands-on practice, and ongoing recertification. You cannot improvise that. Putting untrained personnel at security checkpoints does not fill a gap. It creates one.”

“Our members at TSA have been showing up every day, without a paycheck, because they believe in the mission of keeping the flying public safe,” Kelley said. “They deserve to be paid, not replaced by untrained, armed agents who have shown how dangerous they can be.”

Other airports with call-out numbers over 20% Saturday included Baltimore/Washington International Thurgood Marshall Airport, Chicago Midway International Airport, Charlotte Douglas International Airport, Phoenix Sky Harbor International Airport, Long Beach Airport, Pittsburgh International Airport, and Luis Munoz Marin International Airport in San Juan, Puerto Rico. 

Airports with high wait times Saturday included Luis Munoz Marin International Airport, with wait times of roughly two-and-a-half hours in the standard TSA line; George Bush Intercontinental Airport in Houston, with wait times of over two hours; LaGuardia, with wait times of one hour and 40 minutes, and Hartsfield Jackson Atlanta International Airport, with wait times of an hour-and-a-half. 

Record-shattering temperatures are expected to continue on Sunday as a rare and strong early-season heat dome has resulted in triple-digit highs in some parts of the Western U.S.

As the temperatures soared to 105 degrees on Saturday in Phoenix, Ariz., the third-straight day the weather has topped the 100-degree mark, more than 400 people attending an airshow in nearby Glendale were treated for heat-related illnesses, authorities said.

At least 25 people attending the Luke Days Airshow at Luke Air Force Base were overcome by the sweltering weather and had to be hospitalized for various heat-related illnesses, U.S. Air Force Brig. Gen. David Berkland said at a news conference on Saturday, according to ABC affiliate station KNXV in Phoenix.

Berkland said the majority of the people treated were under the age of 12 or over the age of 60, and many also had “pre-existing medical conditions like heart disease, diabetes or pregnancy.”

Dozens of locations across the West have broken high-temperature records since Thursday, and some areas in the Plains have also seen records fall.

The temperature in Phoenix reached 105 degrees for the third straight day on Saturday, tying a record for March. In Tucson, temperatures soared to 102 on Saturday. Las Vegas, Nev., hit 96 on Saturday, the second-highest temperature there for March behind the 97-degree record set on Friday.

Elsewhere in the West, Salt Lake City, Utah, and Denver, Colo., set new highs for March when they hit 84 and 86 degrees, respectively, on Saturday,

Hot weather also stretched across the Midwest and Great Plains. Omaha, Neb., recorded 96 degrees on Saturday, while Wichita, Kan., and Kansas City, Mo., each reached 93.

Extreme heat warnings remain in effect for parts of southern California, Nevada and Arizona on Sunday, including Las Vegas, Phoenix, Tucson and Lake Havasu, Ariz.

Phoenix is likely to surpass the 100-degree mark again on Sunday, the fourth-straight day the city is expected to surpass that temperature. Las Vegas and Salt Lake City could also see additional daily records heading into Monday.

Hot weather is forecast to continue to move into the South and the Ohio Valley, where dozens of daily records could be broken from interior California to Texas and the Carolinas, including the cities of Sacramento, Las Vegas, Albuquerque, Dallas, Oklahoma City, Memphis, New Orleans, Cincinnati and Raleigh.

Severe weather in store for southern Indiana and Pennsylvania

Some severe storms are possible for southern Indiana and most of Pennsylvania later Sunday and into Sunday night and could include damaging winds and large hail. Isolated tornadoes are also possible for a sliver of Ohio, the northern panhandle of West Virginia and southwest Pennsylvania.

By late Sunday night, a line of scattered storms will likely stretch from Evansville, Ind., to Columbus, Ohio, and into State College, Pa.

New York City could also see a couple of thunderstorms, some strong enough to produce gusty winds and possibly small hail.

Critical fire weather threat in the Plains

Millions of people across the Plains are under red flag fire warnings on Sunday due to low humidity, warm temperatures, gusty winds and dry vegetation. The fire danger is expected to continue Sunday before improving a bit into Monday.

Meanwhile, several wildfires are still burning further north in Nebraska and South Dakota.

Fire crews in Nebraska have made significant progress in battling the Morrill Fire, largest wildfire in state history. The blaze, which has burned more than 640,000 acres across multiple counties in western Nebraska, was 98% contained as of Saturday night, according to the Nebraska Emergency Management Agency.

Another large Nebraska wildfire, the Cottonwood Fire in the south-central part of the state, has burned nearly 130,000 acres and was 94% contained on Saturday night, according to the Nebraska Emergency Management Agency.

More damaging floods in Hawaii

After a damaging flood event more than one week ago during which parts of Hawaii recorded rainfall by feet, more rain has brought damaging and impactful flooding across parts of the island.

A flash-flood warning was in effect Saturday for potentially life-threatening flooding on Oahu and the potential for the Wahiawa Dam to fail. There were several reports of damage, water rescues and road closures due to flooding.

The threat of the Wahiawa Dam failing has subsided as water levels gradually subside, but any heavy pockets of rain could cause rapid water rises and reinvigorate the threat.

The heaviest rain has shifted eastward, with the island of Molokai under a flash-flood warning on Sunday.

All Hawaiian islands except Kauai remain under a flood watch through Sunday for more heavy rain. The heaviest rain is expected mostly on the Big Island and the island of Maui, but the other islands will see some rain showers and perhaps some isolated heavy pockets of rain.  

Thunderstorms will be possible at times, which may include damaging winds.

ABC News’ Geoffrey Bansen contributed to this report.

Transportation Secretary Sean Duffy said Sunday that Immigration and Customs Enforcement (ICE) agents are trained and can assist with airport security, following President Donald Trump’s announcement that ICE would be sent to airports starting Monday.

Duffy added that sending in ICE takes away possible leverage for Democrats.

“Democrats want to see long lines at airports as leverage,” Duffy told ABC News’ “This Week” co-anchor Jonathan Karl. “President Trump’s trying to take that leverage away and not make the American people suffer.”

Democrats blocked funding for DHS to push for policy reforms to ICE, including requiring agents to not wear face masks, wear body cameras and have warrants signed by a judge before entering a home or business. Republicans have so far rejected those proposals.

But ICE has remained funded through appropriations from the Trump’s tax and spending bill passed last summer, while key DHS agencies like TSA, the Federal Emergency Management Agency and the Coast Guard are left unfunded.

Duffy blamed Democrats for the hours-long security line waits at airports, saying Trump has already made policy concessions.

Some TSA officers have begun calling in sick or quitting as they missed their first paycheck since the shutdown began. DHS said that more than 400 TSA officers have quit so far.

Karl pressed Duffy on the logistics of Trump’s plan for ICE agents.

“Is there a plan in place? I mean, how many ICE agents are we talking about? Do they have any practical experience in manning airport security lines?,” Karl asked.

“Sure. Well, you — they run those same type of security machines at the southern border, right? Packages come through or people come through. They run similar assets,” Duffy said. “To manage the through flow of people and even administratively they’ll be helpful. But again, we have ICE agents who are trained and can provide assistance to agents.”

It is unclear how many ICE agents would be sent to airports or which airports they will be sent to.

Duffy said that ICE does have proper security training, but could also help by just managing lines. It is unclear how many ICE agents would be sent to airports or which airports they will be sent to.

The president’s announcement comes as Duffy has said repeatedly that he expects the chaos and delays at U.S. airports to worsen amid the busy spring break travel season because of the ongoing shutdown of the Department of Homeland Security.

“I think you’re going to see more TSA (Transportation Security Administration) agents as we come to Thursday, Friday, Saturday of next week, they’re going to quit, or they’re not going to show up,” Duffy said. “I do think it’s going to get much worse, and as it gets worse, I think that puts pressure on the Congress to come to a resolution.”

Air travel is facing challenges from multiple fronts this month as the U.S. war with Iran has led to a near-total closure of the critical Strait of Hormuz, sending the price of oil surging worldwide. Higher oil costs has led to a higher cost of jet fuel, and major U.S. airlines are already warning of higher costs.

United Airlines CEO Scott Kirby told employees the airline was planning for oil to reach $175 per barrel. Oil is currently nearing $100 per barrel. Duffy said despite the rising cost, major airline carriers told him they have enough jet fuel supply.

“I think airlines do well when they plan for the worst and hope for the best. That’s what I think is happening there,” Duffy said.

As for a timeline, Duffy maintained the administration’s statements that the war would last four to six weeks and that the Pentagon has “anticipated all that’s happening.”

“I think you’re going to see this is short-lived,” Duffy said. “When the strait opens up, you’re going to see a little bit of a lag as those carriers get to their destinations, but I think you’re going to see a very quick rebound in energy prices when this conflict is resolved.”