ELLSWORTH AIR FORCE BASE, S.D. -- Airman 1st Class Mitchell Carrell, 28th Civil Engineer Squadron firefighter, endures hard work while climbing an out-crop of rocks in the summer heat at Rapid Creek Trail Head, Rapid City, S.D., 16 June. While working in the summer heat it’s important to periodically take breaks and drink plenty of water. (U.S. Air Force photo/Airman 1st Class Anthony Sanchelli)