AP Photo/Pablo Martinez Monsivais
President Barack Obama steps off Air Force One during an unannounced visit to Bagram Air Base in Afghanistan. Friday, Dec. 3, 2010.
AP Photo/Pablo Martinez Monsivais
President Barack Obama is greeted by NATO Commander in Afghanistan Gen. David Petraeus, left, and U.S. Ambassador to Afghanistan Karl W. Eikenberry, center, after stepping off Air Force One during an unannounced visit to Bagram Air Field in Afghanistan, Friday, Dec. 3, 2010.
AP Photo/Pablo Martinez Monsivais
President Barack Obama is greeted by NATO Commander in Afghanistan Gen. David Petraeus, left, and U.S. Ambassador to Afghanistan Karl W. Eikenberry, after stepping off Air Force One during an unannounced visit to Bagram Air Base in Afghanistan, Friday, Dec. 3, 2010.
JIM WATSON/AFP/Getty Images
Soldiers from the 101st Airbourne await President Barack Obama's arrival for an unscheduled visit to Bagram Air Base in Afghanistan on Dec. 3, 2010.
AP Photo/Pablo Martinez Monsivais
President Barack Obama waves as he is introduced to the troops at a rally during an unannounced visit at Bagram Air Field in Afghanistan, Friday, Dec. 3, 2010.
AP Photo/Pablo Martinez Monsivais
President Barack Obama is introduced to the troops by NATO Commander in Afghanistan Gen David Petraeus at a rally during an unannounced visit at Bagram Air Field in Afghanistan, Friday, Dec. 3, 2010.
AP Photo/Pablo Martinez Monsivais
President Barack Obama speaks to the troops at a rally during an unannounced visit at Bagram Air Field in Afghanistan, Friday, Dec. 3, 2010.
AP Photo/Pablo Martinez Monsivais
President Barack Obama speaks to the troops at a rally during an unannounced visit at Bagram Air Field in Afghanistan, Friday, Dec. 3, 2010.
AP Photo/Pablo Martinez Monsivais
President Barack Obama greets troops at a rally during an unannounced visit at Bagram Air Field in Afghanistan, Friday, Dec. 3, 2010.
