U.S. Air Force Master Sgt. Kelly Moose, right, 1st Aircraft Maintenance Squadron first sergeant, offers water to Airmen working in the sweltering heat as a part of Operation Warm Heart, June 28, 2012, at Langley Air Force Base, Va. The Langley first sergeants kept quiet about the event so they could truly surprise Airmen across the base. (U.S. Air Force photo by Airman 1st Class Austin Harvill/Released)