An F-16 Fighting Falcon fighter aircraft pilot from the 480th Fighter Squadron, Spangdahlem Air Base, Germany, conducts pre-flight checks before take off at Beja Air Base, Portugal, Oct. 21, 2015. The 480th FS is here in support of Exercise Trident Juncture 2015, a multinational exercise consisting of more than 30,000 troops from more than 30 nations. The exercise is geared toward demonstrating ability to respond on a large scale to a crisis scenario. (U.S. Air Force photo by Airman 1st Class Luke Kitterman/Released)