ANDERSEN AIR FORCE BASE, Guam - Crew chiefs Staff Sgt. Zachary Braddock, Airman 1st Class Ryan Pottmeyer and Airman 1st Class Jonathon Sladek, conduct routine maintenance on an F-22 Raptor here Sept. 13. The Airmen are from the 49th Air Craft Maintenance Squadron, Holloman Air Force Base, N.M., and are participating in Valiant Shield 2010, a U.S. Pacific Command exercise, from September 12 to 21. The exercise focuses on integrated joint training and interoperability among U.S. military forces while responding to a range of mission scenarios. (U.S. Air Force photo/Senior Airman Nichelle Anderson)