The Boston Marathon is a 26.2-mile race. But for a Marine, the last 100 yards were the toughest. Don.
'Recon Challenge' Honors Fallen
With 11 obstacles and more than 26 miles of unforgiving terrain, the Recon Challenge is one of the most grueling and intense competitions the military has to offer. Recon Marines ran the course in full gear, including a 45 pound pack, in honor of their fallen brothers. Video by Cpl. Clayton Filipowicz