Police boats returned to the Potomac River on Friday as part of the recovery and investigation after a midair collision killed 67 people in the United States' deadliest aviation disaster in

Recovery crews and divers searched the Potomac River for remains and cleared wreckage Saturday from the midair collision of a passenger jet and Army helicopter that killed 67 people. A Coast Guard cutter outfitted with a crane waited by the wreckage as occasional recovery team members slipped into the water amid a group of smaller emergency boats.

American Airlines jet and Army Black Hawk over Potomac River. 41 bodies recovered; wreckage search ongoing. NTSB investigates helicopter deviation, air traffic control staffing. Both black boxes found;