COLORADO BOUND Deputy Defense Secretary William J. Lynn III boards an Air Force C-40B en route to Colorado Springs, Colo., April 13, 2010. Lynn will speak at the National Space Symposium, where he is expected to discuss the Defense Department's strategy to address the changes and challenges in military space. Lynn also will visit with U.S. Northern Command and North American Aerospace Defense Command officials. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 281389-C-YSH35-689.jpg Photo Gallery