The accident follows a dozen fatal crashes during Army Black Hawk training missions since January 2014 that have killed 47 ...

The crew of the Army Black Hawk helicopter involved in the deadly collision with a jetliner had thousands of hours of flight experience.

Air traffic staffing 'not normal' when jet collided with helicopter killing 67 - Officials say there are no survivors among the 67 passengers on the aircrafts that collided above Washington, D.C.