Photo Credit: Sgt. 1st Class James C. Lally, Massachusetts National Guard Public Affairs
Sgt. Ezequiel Valencia, a human resources sergeant, with the 747 Military Police Company, Massachusetts Army National Guard, looks on as runners begin the 117th Boston Marathon, April 15, 2013, in Hopkinton, Mass. More than 400 Guardsman were on hand to help local law enforcement keep the route clear for an estimated 27,000 runners.