GUMPATHON U.S. Marine and British Royal Marine Commandos run and wheel through Washington, D.C., during the "Gumpathon" fundraising event, Sept. 14, 2010. The Gumpathon aims to raise $1.5 million for charities supporting the well-being of American and British wounded warriors. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 608868-P-OPI45-586.jpg Photo Gallery