Two U.S. Air Force A-10 attack jets crashed Wednesday night at Nellis Air Force base's Nevada Test and Training Range.

Both pilots ejected safely before the planes hit the ground, the Air Force said in a statement.

The two A-10C Thunderbolt II aircraft were assigned to the 57th Wing at Nellis Air Force Base.

The cause of the accident is under investigation, but typically when two planes crash at the same time the most likely cause is a mid-air collision of some kind.