Now, the U.S. Army Corps of Engineers will focus on retrieving the mangled helicopter, a crucial component in federal authorities' probe as they look to confirm data related to its altitude at the time of the collision,

An American Airlines regional jet collided with a U.S. Army Black Hawk helicopter on Jan. 29. Both aircraft plunged into the Potomac River near Reagan Airport.

Two Washington, D.C., airport employees have been arrested in connection with the leak of a video showing the moment Flight 5342 collided with a Black Hawk helicopter on Jan. 29.