The American Airlines flight was carrying 64 people when it collided with a Black Hawk helicopter near Reagan National Airport.

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 U.S. skating community was in mourning on Thursday after learning several skaters were on an American Airlines regional passenger plane that crashed near Reagan Washington National Airport. The plane,