LaGuardia Airport in New York is currently closed following a serious incident involving an Air Canada Express flight and a ground vehicle, specifically a fire truck. Reports indicate that the aircraft collided with the vehicle during landing operations, resulting in multiple injuries, including critical conditions for four firefighters. Flight operations have been halted as emergency services respond to the scene, and authorities have confirmed several fatalities. The incident led the FAA to issue a ground stop at the airport, creating significant disruptions for travelers.