LIGHT MOMENT U.S. Defense Secretary Robert M. Gates shares a laugh with U.S. Ambassador to Canada David Jacobson, second from right, during a meeting at the Old City Hall in Ottawa, Canada, Jan. 27, 2011. Gates visited Canada to attend bilateral meetings with his Canadian counterparts. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 870154-I-PQN66-036.jpg Photo Gallery