Yyoda, a U.S. Air Force military working dog, bites U.S. Air Force Senior Airmen Laci Mendez, 97th Security Forces Squadron working dog handler, during bite training at the kennels Feb. 10, 2015. Military working dogs are trained to bite and hold, releasing only when their handler gives the command. (U.S. Air Force photo by Airman 1st Class Megan E. Acs/Released)