The U.S. Army Corps of Engineers, Baltimore District, U.S. Coast Guard and U.S. Navy’s Supervisor of Salvage and Diving crews demobilize equipment following completion of wreckage removal from the Potomac River section affected by the Jan. 29 midair collision of an American Airlines regional jet and a U.S. Army Black Hawk helicopter near Ronald Reagan Washington National Airport. (U.S. Army photo by David J. Adams)