Marine Corps Sgt. Luis Remache, right, offers words of encouragement to Boston Marathon bombing victim J.P. Norden during his visit to the Walter Reed National Military Medical Center in Bethesda, Md., June 12, 2013. Norden and his brother, Paul Norden, each lost a leg, and were pelted with shrapnel during the second blast at the April 15 marathon while shielding others from the first blast.