U.S. Army Lt. Col. Christopher Riga, commander of Special Operations Task Force - South, briefs of group of SOTF - S distinguished guests, including U.S. Rep. Jim Marshall, D-Georgia (center), before the group departs to visit Arghandab District, Sept. 4, at Kandahar Air Field, Afghanistan. Rep. Marshall is a veteran of the Vietnam War, as well as a member of the U.S. Army Ranger Hall of Fame.