Tech. Sgt.Chad Heyen, from the 18th Aircraft Maintenance Squadron, Kadena Air Base, Japan, conducts a post-flight check on a deployed F-15 from the 44th Fighter Squadron at Korat Royal Air Force Base, Thailand, during Cope Tiger 2009 March 10. The 18th Wing is participating in Cope Tiger 2009, an annual exercise to improve combat readiness and interoperability of U.S., Thai and Singaporean forces while enhancing regional security and providing humanitarian support. (U.S. Air Force photo/Staff Sgt. Angelique Perez)