U.S. Marine Corps pilots from Marine Fighter Attack Squadron 225, currently deployed to Marine Corps Air Station Iwakuni, Japan, conduct pre-flight inspections of their F/A-18 Hornets during Exercise Max Thunder 15-1 at Gwangju Air Base, Republic of Korea, April 17, 2015. Max Thunder is a large-scale employment exercise designed to increase U.S. and ROK interoperability and ultimately enhance commitments to maintain peace in the region. (U.S. Air Force photo by Senior Airman Taylor Curry/Released)