Defense Secretary Leon Panetta is greeted by Col. John Shafer after arriving to greet troops at Forward Operating Base Shukvani, Afghanistan, Wednesday, March 14, 2012. (AP Photo/Scott Olson, Pool)

Photo by: Scott Olson

Defense Secretary Leon Panetta is greeted by Col. John Shafer after arriving to greet troops at Forward Operating Base Shukvani, Afghanistan, Wednesday, March 14, 2012. (AP Photo/Scott Olson, Pool)