Spray and pray: 31 CES Airmen keep Wyverns cool
U.S. Air Force Airman 1st Class Frederick Stracke, 31st Civil Engineer Squadron heating, ventilation, air conditioning and refrigeration apprentice, cleans an HVAC/R unit, June 11, 2015, at Aviano Air Base, Italy. 31 CES Airmen use a pressure hose and mobile water tank to clean approximately 50 units a week. (U.S. Air Force photo by Senior Airman Austin Harvill/Released)