LUNCHTIME WAVE Defense Secretary Robert M. Gates gives a wave to Air Force Academy cadets having lunch break in Mitchell Hall after he taught classes as part of the Capstone Seminar at the Air Force Academy in Colorado Springs, Colo., March 4, 2011. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 645043-P-JSP95-380.jpg Photo Gallery