Colorado Springs and Colorado have become the epicenter for America's military space efforts over the past 36 years. Here's a look at some local military space units: Air Force Space Command: This four-star command at Peterson Air Force Base overseas military space efforts nationwide. With a budget topping $12 billion and 30,000 airmen and civilian workers, it is the nation's hub for military space. Army Space and Missile Defense Command: This one-star command element at Peterson oversees top Army Space efforts including satellite communications and missile defense. 21st Space Wing: This Peterson unit oversees missile warning and "space control" for Space Command.