Defense Secretary Leon Panetta during a visit with troops at Incirlik Air Base, Turkey, Friday, Dec. 14, 2012. Panetta stopped to visit troops in Turkey before heading home after spending three days in Afghanistan.  (AP Photo/Susan Walsh, Pool)

Photo by: Susan Walsh

Defense Secretary Leon Panetta during a visit with troops at Incirlik Air Base, Turkey, Friday, Dec. 14, 2012. Panetta stopped to visit troops in Turkey before heading home after spending three days in Afghanistan. (AP Photo/Susan Walsh, Pool)