GATES ARRIVES IN MEXICO CITY Defense Secretary Robert M. Gates, left, walks with Director of Protocol Lt. Col. Ruben Montesinos as his wife, Becky Gates, walks with Ambassador to Mexico Antonio Garza, upon their arrival in Mexico City, Mexico, April 29, 2008. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 078982-U-HVM83-017.jpg Photo Gallery