ARRIVEDERCI CAKE U.S. Defense Secretary Leon E. Panetta laughs as he cuts a cake he received from his staff on a military aircraft as he returned to Washington, D.C., Jan. 19, 2013, on his last flight as the 23rd defense secretary. Panetta concluded a six-day trip to Europe to visit with defense counterparts and troops SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 583119-C-RFY56-847.jpg Photo Gallery