Four OH-58D Kiowa Warrior helicopters fly over the 2nd Squadron, 6th Cavalry Regiment, 25th Combat Aviation Brigade, as part of a missing man formation flight, during a remembrance ceremony for Chief Warrant Officer Three Stanley B. Hepfner and Chief Warrant Officer Two Jonathan B. Millward, at Wheeler Army Airfield, June 5. Both OH-58D Kiowa Warrior helicopter pilots were killed in an aviation accident, May 27, at the airfield.