Tech. Sgt. Steven Groff, 28th Security Forces Squadron flight chief, and Airman 1st Class Christopher Dominguez, 28th SFS response force member, participate in a training exercise at Ellsworth Air Force Base, S.D., Feb. 10, 2016. Airmen of the 28th SFS engage in more than 200 hours of training annually, which include combative skills and law enforcement training. (U.S. Air Force photo by Airman 1st Class Denise M. Nevins/Released)