SEEKING 'UNCONVENTIONAL THINKERS' Defense Secretary Robert M. Gates speaks to students at the Air War College and the Air Command and Staff College at Maxwell Air Force Base, Ala., April 21, 2008. Gates told the students, "An unconventional era of warfare requires unconventional thinkers." SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 475361-Q-AMS97-315.jpg Photo Gallery