ELLSWORTH AIR FORCE BASE, S.D. -- Airman 1st Class Zachary Karas, 28th Security Forces Squadron member, and others from the 28 SFS render a small arms salute during the National Peace Officers Memorial Day retreat ceremony here, May 15. National Peace Officers Memorial Day honors all the local, state and federal law enforcement officers who serve and protect. (U.S. Air Force photo/Senior Airman Marc I. Lane)