KANDAHAR, AFGHANISTAN - JAN 21, 2002: Staff Sgt. Chris Sheffield,a platoon sergeant for 1st platoon, Company B, 2nd Battalion, 187th Infantry Regiment, leans over a bunker along the outter perimeter of Kandahar airport. Sheffield and his platoon are part of the 101st Airborne Division (Air Assault) supporting during Operation Enduring Freedom in Afghanistan. (Photo by David K. Dismukes/Getty Images)