A F-15 Fighting Eagle from the 428th Fighter Squadron arrives at Luke Air Force Base, Arizona on Nov. 19, 2015. The 428th Fighter Squadron,  from Mountain Home AFB in Idaho, is  taking part in Forging Sabre 2015 exercise, which also involves Luke AFB's 425th FS and members of the Republic of Singapore armed forces. (U.S. Air Force photo by Senior Airman James Hensley)