ELLSWORTH AIR FORCE BASE, S.D. -- 1st Lt. MaryAnn Nguyen, Ellsworth Honor Guard member, hands off the installation flag to Maj. Erik Bruce, 28th Security Forces Squadron commander, during the National Peace Officers Memorial Day retreat ceremony here, May 15. National Peace Officers Memorial Day ensures relatives, friends and colleagues of fallen officers that their sacrifice is not forgotten. (U.S. Air Force photo/Senior Airman Marc I. Lane)