Newark flights halted after smoke forces control tower evacuation

Group 1 - Flights at Newark Liberty International Airport were halted due to the evacuation of the control tower caused by smoke, leading to a "ground stop" [1] - The disruption at Newark coincided with issues at LaGuardia Airport, which faced its own disruptions following an accident [1] Group 2 - An Air Canada aircraft collided with a ground vehicle at the airport, resulting in the deaths of two pilots and injuries to several others [2] - The incident involved an Air Canada Express flight operated by Jazz Aviation, which struck a Port Authority rescue and firefighting vehicle shortly after landing [2]