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, Rapid Creek Trail Head, Rapid City, S.D., 16 June. Whether adventuring through the Black Hills or working outside in the sun at make sure to drink plenty of water and take breaks to avoid overheating. (U.S. Air Force photo/Airman 1st Class Anthony Sanchelli)