Three soldiers killed in a helicopter collision with an American Airlines passenger jet were part of a US unit that is responsible for moving Pentagon officials in a crisis.

The tragic mid-air collision between a Black Hawk helicopter and an American Airlines jet has left the nation in mourning, claiming the lives of 67 individuals including over a dozen aspiring figure ...

Two shorter runways at DCA are to be closed until Feb. 20. Federal transportation officials had earlier restricted helicopter flights at the busy airport.

But even before the National Transportation Safety Board completes its investigation—a neurotically thorough process that ...