President Barack Obama and Chuck Canterbury, National President, Fraternal Order of Police (FOP) walk through a police honor guard cordon

President Barack Obama and Chuck Canterbury, National President, Fraternal Order of Police (FOP) walk through a police honor guard cordon 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.