Keywords: US Navy 070314-N-0483B-002 Master-at-Arms 2nd Class Howard Avery trains Jack, a military working dog, as he jumps over a low wall of an obstacle course.jpg en YOKOSUKA Japan March 14 2007 - Master-at-Arms 2nd Class Howard Avery trains Jack a military working dog as he jumps over a low wall of an obstacle course on board Commander Fleet Activities Yokosuka The working dogs run the obstacle course to keep in shape and to prepare for real life scenarios U S Navy photo by Mass Communication Specialist Seaman Kari R Bergman RELEASED 2007-03-14 070314-N-0483B-002 Navy http //www navy mil/view_image asp id 43962 U S Navy photo by Mass Communication Specialist Seaman Kari R Bergman PD-USGov-Military-Navy United States Fleet Activities Yokosuka Master-at-arms Military working dogs of the United States Jumping dogs |