Recovery work continues at the crash site in Washington, where all 64 people on board an American Airlines flight died along with three soldiers on a military helicopter. Meanwhile, a report has found air traffic control tower staffing was "not normal" for the time of day.

The American Airlines regional jet was on the final approach to Ronald Reagan National Airport in Washington, D.C., when it collided midair with a military Black Hawk helicopter shortly before 9 p.m.