JOINT BASE PEARL HARBOR-HICKAM, HI, UNITED STATES01.11.2018 Four U.S. Air Force F-15C Eagle fighter jets from California Air National Guard’s 144th Fighter Wing return to base during Sentry Aloha 18-01 at Joint Base Pearl Harbor-Hickam, Hawaii Jan. 11, 2018. Sentry Aloha provides tailored, cost effective and realistic combat training for U.S. Air Force, Air National Guard and other Department of Defense services to provide U.S. warfighters with the skill sets necessary to perform their homeland defense and overseas combat missions. (Air National Guard photo by Senior Master Sgt. Chris Drudge)