A new course
Staff Sgt. Barton Gonzales, 4th Security Forces Squadron military working dog handler run Tonic, 4th SFS MWD, through a tunnel on the obedience course at Seymour Johnson Air Force Base, N.C., Jan. 9, 2014. According to Gonzales, this obstacle simulates the handler employing their dog into a tunnel which is a common hurdle faced in real world situations. (U.S. Air Force photo by Airman 1st Class Shawna Keyes)