Staff Sgt. Ryan Kneafsey, 56th Security Forces Squadron unit trainer, assists with the apprehension of a suspect arrest during an exercise as part of an Emergency Vehicle Operations Course held at Luke Air Force Base, Ariz., Aug. 21, 2017. Kneafsey and several other 56 SFS members participated in different segments of vehicle backing, braking, pursuit driving and high-risk stops. (U.S. Air Force photo/Airman 1st Class Caleb Worpel)