Divers are expected to return to the Potomac River as part of the recovery and investigation after the United States' deadliest aviation disaster in almost a quarter century.

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.

As investigators look into the cause of Wednesday night's plane crash, pilots share their initial take on the collision.