U.S. Army specialists Carlos Cruz and Justin Butler, 364th Training Squadron, Cable & Antenna Systems course, are being trained on proper climbing techniques, proper protective clothing, inspection and adjustment of their equipment Sept. 24, 2013, at Sheppard Air Force Base, Texas. In this part of the course, they are being taught to perform a rescue of an incapacitated person. (U.S. Air Force photo by Frank Carter/Released)