Helo lifts 57 air conditioning units to roof of Oklahoma City Air Logistics Complex main production facility
Tradesmen from Matherly Mechanical contractors look up as a large heating unit 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 production facility was closed for the Memorial Day holiday weekend. (U.S. Air Force photo/Greg L. Davis)