Senior Airman Carl Johnson sets up a PRC-117 tactical satellite. U.S. Air Force Senior Airman Carl Johnson sets up a PRC-117 tactical satellite during training at Camp Lemonier, Djibouti, on Dec. 29, 2009. Hands-on training gives personnel the skills necessary to install, operate and maintain these systems in realistic field environments. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 642276-T-WRE87-503.jpg Photo Gallery