An American Eagle flight and a military helicopter collided over the Potomac River near Reagan National Airport Wednesday night.

Officials say the conditions of the Potomac River are complicating recovery efforts of the bodies of the 67 presumed dead in a mid-air collision between American Airlines flight 5342 from Wichita and a military Black Hawk helicopter.

The collision involved a Bombardier CRJ700 regional jet operated by PSA Airlines and a Sikorsky H-60 helicopter.