NEW YORK (AP) — A jet landing at New York City’s LaGuardia Airport collided with a fire truck on the runway, killing the pilot and copilot and injuring several others. Here’s what you need to know:

What happened?

The crash occurred around 11:45 p.m. on Sunday when an Air Canada regional jet arriving from Montreal struck an airport fire truck that was responding to another incident. Audio recordings indicate the truck was cleared to cross the runway before a controller attempted to stop it, resulting in the collision.

Photos from the crash reveal the jet’s nose crushed and out of position, while the damaged emergency vehicle lay overturned nearby.

Who was hurt or killed?

The pilot and copilot perished in the crash, confirming their deaths though identities remain unreleased. Approximately 40 passengers and crew sustained injuries, some serious. Most were released from area hospitals by Monday morning.

How is air travel impacted?

LaGuardia has been shut down post-crash, leading to flight diversions. It is expected to remain closed at least until 2 p.m. Monday as NTSB investigators proceed.

This incident exacerbates existing troubles at U.S. airports amidst a government shutdown, particularly during spring break travel.

Did the government shutdown play a role?

While preliminary causes of the crash are still under review, challenges air traffic controllers face have been brought to the fore. Controllers are essential workers and continue to work during shutdowns, which have previously led to stressful conditions and operational issues.