Frank Vigil, from the Space and Missile Systems Center (SMSC), Los Angeles Air Force Base (AFB), California (CA), attaches the Multi-Integrated Laser Engagement System (MILES) gear to his cover before starting the tactics portion of Guardian Challenge 2004 held at Vandenberg Air Force Base (AFB), California (CA). Guardian Challenge, the world's premier space and missile competition, is a four-day event hosted annually at Vandenberg AFB