As recovery crews endure cold water and miserable rain Friday to attempt to pull more wreckage of American Airlines Flight 5342 and an Army Black Hawk helicopter from the Potomac River, investigators are intensifying their search for the collision’s cause – with initial concerns already raised about the path of at least one of the aircraft.

A midair collision between an American Airlines regional jet and a Black Hawk helicopter over the Potomac River near Reagan National Airport in Washington, D.C. is being investigated by authorities. Follow along for live updates,

The Army on Friday released the names of two male aviators who were killed when their Black Hawk helicopter collided with an American Airlines regional jet on Wednesday night. But in an extraordinary step, the Army did not identify the third crew member, a female pilot, citing her family’s request for privacy.

The US Army Black Hawk helicopter that collided with a passenger jet over Washington on Wednesday evening was manned by an experienced three-person crew conducting a routine training flight over familiar territory,