A rappel master, left, assists a soldier as he checks his rope before rappelling down a 100-foot tower during a sapper leader course on Camp San Luis Obispo in San Luis Obispo County, Calif., July 19, 2015. The rappel master is assigned to the U.S. Department of Justice, Special Operations Response Team. A rappel master, left, assists a soldier as he checks his rope before rappelling down a 100-foot tower during a sapper leader course on Camp San Luis Obispo in San Luis Obispo County, Calif., July 19, 2015. The rappel master is assigned to the U.S. Department of Justice, Special Operations Response Team. SHARE: Download: Full Size (1.820205 MB) Tags: photo essays Credit: VIRIN: 171964-Z-DJV77-617.jpg Photo Gallery