Two F-15E Strike Eagles are parked on the flightline Feb.10, 2014, as the sun sets over Nellis Air Force Base, Nevada. More than 3,200 service members and 125 aircraft from joint U.S. and allied combat forces from around the world participate in Red Flag 14-1, hosted by the 414th Combat Training Squadron. The main objective of the exercise is to increase capabilities to defend against future threats.The F-15Es are assigned to the 391st Fighter Squadron, Mountain Home AFB, Idaho. (U.S. Air Force photo/Lorenz Crespo)