Nine soldiers were killed when two U.S. Army Black Hawk helicopters crashed after a medical evacuation exercise near the Kentucky border Wednesday night, military officials said.
The two HH-60 Black Hawk assault helicopters, from the 101st Airborne Division based at Fort Campbell, Kentucky, collided over Trigg County, Kentucky, at about 10 p.m., officials said.
The helicopters were flying in a "multi-ship formation" with personnel using night vision goggles, said Brigadier General John Lobus, the deputy commander of the 101st Airborne Division. There were five people in one helicopter, four in the other.
The crash, in a wooded area near the Tennesee border, remains under investigation. An aviation team from Fort Rucker in Alabama is due to arrive today to review black box data from the aircraft.