Helo lifts 57 air conditioning units to roof of Oklahoma City Air Logistics Complex main production facility
Tradesmen from Matherly Mechanical contractors position a large heating unit over a support frame while it is lowered in to place by a Sikorsky S-58T heavy-lift helicopter from Aircrane Incorporated May 27, 2018, Tinker Air Force Base, Oklahoma. The helicopter was contracted to move the units which are the size and weight of a passenger sedan in to place in one day while the massive production facility used by Oklahoma City Air Logistics Complex was closed for the Memorial Day holiday weekend. (U.S. Air Force photo/Greg L. Davis)