ANDERSEN AIR FORCE BASE, Guam ? Two E-3 Sentries are seen in the background as an F-15C Eagle takes off on the Andersen flightline while participating in the Valiant Shield 2010 exercise, here Sep. 16. The aircraft are a key component of the major joint flying exercise that kicked off this week. (U.S. Air Force photo by Airman 1st Class Jeffrey Schultze)