FAA Statement: Air Canada Express Flight 8646 struck an Aircraft Rescue and Firefighting vehicle after landing on Runway 4 at LaGuardia Airport in New York. The accident occurred around 11:40 p.m. local time on Sunday, March 22. The CRJ-900 was arriving from Montreal. The FAA and NTSB will investigate. The NTSB is in charge of the investigation and will provide all updates.The airport is closed.