The military now says enemy fire caused two U.S. Army helicopters to collide in Iraq last month, killing four American pilots.
The Defense Department initially said the cause of the Jan. 26 crashes near Kirkuk didn't appear to be an attack. But on Thursday, the Army said forensic evidence revealed that the OH-58D Kiowa Warrior helicopters collided while evading enemy fire and crashed.
The report was released after a memorial service for the soldiers at Fort Drum, where they were based.
Pilots Philip Windorski, Joshua Tillery, Matthew Kelley and Benjamin Todd were warrant officers in the 10th Mountain Division's 10th Combat Aviation Brigade.