Police Officers Day
Federal and local law enforcement officers paused during a ceremony on May 15, 2015, at Selfridge Air National Guard Base, Mich., to mark Police Officers Memorial Day. The event honored the sacrifices of their colleagues who have made the ultimate sacrifice in the line of duty. More than 130 law enforcement officers died while on duty in the U.S. in 2014. (U.S. Air National Guard photo by Tech. Sgt. Dan Heaton)