Technical Sergeant Richard B. Greer USAF, 91 Space Wing's Facility Maintenance Team (FMT), Minot Air Force Base, North Dakota, checks his equipment in preparation for the FMT evaluation at Vandenberg Air Force Base during GUARDIAN CHALLENGE. GUARDIAN CHALLENGE, the world's premier space and missile competition, is a four-day event hosted annually at Vandenberg AFB, CA "to recognize the best and demonstrate the commands warfighting skills. GUARDIAN CHALLENGE creates competition-tough crews; improves readiness and combat capabilities through preparation, innovation and sharing; enhances esprit de corps and strengthens teamwork across all mission areas in the command."