Secretary of Defense, Chuck Hagel, shakes hands with Representative Duncan Hunter (R-Ca.) as Representative Buck McKeon (R-Ca.)(right, blue shirt), Representative Paul Cook (R-Ca.)(left background) and U.S. Ambassador James Cunningham (left foreground) stand at ISAF headquarters in Kabul, Afghanistan, March 10, 2013. Hagel stopped by to say hello to the Congressional delegation who is on a tour of Afghanistan to visit U.S. Troops, NATO leaders, and Afghan counterparts. (Photo by Erin A. Kirk-Cuomo/Department of Defense/Sipa USA)