Senior Airman Erik Nelson and Staff Sgt. Noel Sandoval, 380th Air Expeditionary Civil Engineer Squadron Heating, Ventilation, Air Conditioning and Refrigeration technicians, work on an AC unit outside of the 380th Air Expeditionary Wing headquarters building June 8, 2012. Nelson is deployed from Minot Air Force Base, N.D. and Sandoval is from Lackland Air Force Base, Texas. (U.S. Air Force photo/Master Sgt. Scott MacKay)