ANDERSEN AIR FORCE BASE, Guam - Senior Airman Angel Rivera, Airman 1st Class Paul Altamira and Staff Sgt. Steve Newcomb, electrical and environmental technicians, troubleshoot a generator on a F-15E Strike Eagle here Sept. 13. The Airmen are from the 18th Aircraft Maintenance Squadron, Kadena Air Base, Japan, and are here 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)