A rappel master instructs a soldier descending 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 instructs a soldier descending 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 (1.587061 MB) Tags: Photo Essays Credit: VIRIN: 825420-D-HQR31-074.jpg Photo Gallery