U.S. Defense Secretary Robert M. Gates, right, is greeted by U.S. Ambassador to Colombia William R. Brownfield after the secretary’s arrival in Bogota, April 14, 2010. U.S. Defense Secretary Robert M. Gates, right, is greeted by U.S. Ambassador to Colombia William R. Brownfield after the secretary’s arrival in Bogota, April 14, 2010. SHARE: Download: Full Size (4.49 MB) Tags: Photo Essays Credit: VIRIN: 385698-Y-DVN25-841.jpg Photo Gallery