Lockheed Martin’s Space Operations Simulation Center in Littleton, Colo., simulates on-orbit docking maneuvers with full-scale Orion crew exploration vehicle and International Space Station mockups. Cadets from the Air Force Academy in Colorado Springs, Colo., visited the SOSC during a tour of Lockheed Martin’s Littleton facility July 15, 2011. (Lockheed Martin photo/Patrick Corkery)