U.S. Marine Corps Staff Sgt. Alvin A. Ayers, Marine

U.S. Marine Corps Staff Sgt. Alvin A. Ayers, Marine Tactical Electronic Warfare Squadron 2, Marine Aircraft Group 14, 2nd Marine Aircraft Wing, II Marine Expeditionary Force, aircraft mechanic, center, begins preparations for a bi-weekly inspection of the U.S. Air Force EA – 6B Prowler as crew members look on during Northern Edge 2015 at Eielson Air Force Base, Alaska, June 15, 2015. Northern Edge 2015 is Alaska’s premier joint training exercise designed to practice operations, techniques and procedures as well as enhance interoperability among the services. Thousands of Airmen, Soldiers, Sailors, Marines and Coast Guardsmen from active duty, reserve and National Guard units are involved. (U.S. Marine Corps photo by Cpl. Tyler S. Giguere/Released)