All three pilots taking part in the doomed helicopter flight have now been identified, with officials still investigating what caused the devastating Washington crash

The female pilot killed in the Army helicopter collision with a passenger jet in Washington DC has been named as a former aide to President Joe Biden.

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.