President Barack Obama bows his head after placing a flower in a wreath during the National Peace Officers Memorial Service

President Barack Obama bows his head after placing a flower in a wreath during the National Peace Officers Memorial Service, an annual ceremony honoring law enforcement who were killed in the line of duty in the previous year, at the U.S. Capitol in Washington, D.C. May 15, 2013. Chuck Canterbury, National President, Fraternal Order of Police and Linda Hennie, President, FOP Auxiliary stand with the President.