Secretary Gates and wife Becky are bid farewell by Deputy Chief of Staff for the People's Liberation Army Gen. Ma and wife. Secretary of Defense Robert M. Gates and wife Becky are bid farewell by Deputy Chief of Staff for the People's Liberation Army Gen. Ma and wife in Beijing, China, on Jan. 12, 2011. Gates wrapped up a 4-day trip to China by visiting the People's Liberation Army 2nd Artillery Group and the Great Wall. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 557734-S-JOR54-055.jpg Photo Gallery