Staff Sgt. Shawn Ryan, 92nd Security Forces military working dog handler, watches as Helena, 92nd Security Forces military working dog, balances on obstacles at the military working dog obstacle course here July 14, 2011, at Fairchild Air Force Base, Wash. The obstacle course is made up of several obstacles for the dogs to run, jump and balance on. (U.S. Air Force Photo/Senior Airman Natasha E. Stannard)