The Black Hawk helicopter that collided with a passenger jet near Washington, D.C., last week may have been flying higher than the maximum altitude for its training mission, authorities say.

The Army has identified the third soldier aboard the Black Hawk helicopter involved in Wednesday’s deadly midair collision near Reagan National Airport after it had been initially withheld.

The mangled remains of the Black Hawk helicopter involved in last week’s deadly midair plane crash in DC were pulled out of the Potomac River Thursday, the National Transportation Safety Board ...