A pair of black boxes has been recovered from the American Airlines jet involved in a mid-air collision with a military helicopter, which left no survivors.

Authorities said all aboard the flight died after the fiery collision with the helicopter broke the aircraft apart and sent it plunging in three sections into the icy Potomac River below. Three U.S. Army service members aboard the helicopter also died,

Investigators found the recording devices, or black boxes, from the American Airlines plane that collided with a helicopter Wednesday near Washington.