U.S. Air Force Staff Sgt. Steven Barnum, left, 86th

U.S. Air Force Staff Sgt. Steven Barnum, left, 86th Security Forces Squadron military working dog handler, tugs on his assigned dog’s harness to rile him and reinforce his bite drive toward a simulated perpetrator on Ramstein Air Base, Germany, Sep. 6, 2017. MWD handlers train their dogs to attack targets as quickly and ferociously as possible and release them immediately on demand, ensuring the dogs are capable of providing effective protection against aggressors. (U.S. Air Force photo by Senior Airman Elizabeth Baker)