Two F-1F-15E Strike Eagles from the 345th FS "Chiefs" prepare to launch in support of Exercise Green Flag at Nellis Air Force Base, Nev. During Green Flag, aircrews practiced employing airpower within an irregular warfare environment. (U.S. Air Force photo/Master Sgt. Kevin J. Gruenwald)

An F-15 Eagle takes off into the morning sky as another one taxis out on the tarmac. Aircraft, aircrews, maintainers and support Airmen from around the world are here participating in Red Flag, an exercise that tests warfighting skills in real-time combat situations. (U.S. Air Force photo by Tech. Sgt. Roy A. Santana)

Capts. Nikolas Stengle and Chris Auger drop a joint direct attack munition from their F-15E Strike Eagle. They are assigned to the 336th Fighter Squadron. (U.S. Air Force photo by Capt. Joe Esler) 

F-15 Eagles fire AIM-7 Sparrow missiles at a tactical air-launched decoy off the coast of Hawaii on July 16 during the Rim of the Pacific Exercise 2006. The F-15s are from the Hawaii Air National Guard's 199th Fighter Squadron. (U.S. Air Force photo/Tech. Sgt. Shane A. Cuomo)  

391st Fighter Squadron F-15E's from Mountain Home AFB, overfly Guam on their way to Andersen AFB