The U.S. Army has named the third service member who died in the collision between a Black Hawk helicopter and a commercial plane.

The Army identified the third soldier on the Black Hawk helicopter involved in the midair crash over the Potomac River Wednesday night as Capt. Rebecca M. Lobach.

The Black Hawk helicopter that collided with a passenger jet in Washington on Wednesday was on a training flight along a route core to a seldom-discussed military mission to evacuate senior officials to safety in the event of an attack on the U.S., officials say.