For many, the Sikorsky UH-60 Black Hawk helicopter, like the one involved in the Wednesday collision over the Potomac River in Washington, D.C., is familiar for one reason: the 2001 movie "Black Hawk Down ," based on the 1993 shooting down of U.S. Black Hawk helicopters during the Battle of Mogadishu in Somalia.

The Black Hawk helicopter was on an annual proficiency training flight when it collided with an American Airlines jet.