Secretary Gates and Adm. Mike Mullen attend a meeting. Secretary of Defense Robert M. Gates and Chairman of the Joint Chiefs of Staff Adm. Mike Mullen attend a meeting hosted by Mexican Secretary of the Navy Adm. Saynez and Secretary of National Defense Gen. Galvan during a visit to Mexico City, Mexico, on March 23, 2010. Gates, Mullen and Secretary of State Hillary Clinton attended the Merida Initiative Plenary, which focuses on helping the Mexican government fight drug-trafficking cartels and other security threats. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 523117-F-FBL16-728.jpg Photo Gallery