Flights in and out of Reagan National Airport in Washington, D.C. were cancelled Thursday morning, hours after a jet and a military helicopter collided and crashed into the Potomac River.At Logan Airport in Boston,

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.

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