17th Security Forces Squadron
U.S. Air Force Senior Airman Catherine D. Lund, 17th Security Forces Squadron military working dog handler, conducts bite training with Spike, 17th SFS military working dog, on Goodfellow Air Force Base, Texas, Aug. 25, 2015. Like security forces personnel, MWDs must be certified in order to be employed as SF members. (U.S. Air Force photo by Airman 1st Class Devin Boyer/Released)