Nonbiting Technique Marine Corps Sgt. Alex Scott and Lance Cpl. Braxton Rico test the muzzle on Uurzua, a military working dog, at Duboce Park during Fleet Week San Francisco, Oct. 6, 2017. Scott and Rico are assigned to 1st Marine Expeditionary Force. Navy photo by Seaman Natalie Byers SHARE: Download: Full Size (1.58 MB) Tags: Marines, military working dogs, Northern Command, training, Marine Corps Credit: Seaman Natalie Byers VIRIN: 171007-N-ZZ513-166A.JPG Photo Gallery