Navy Growlers prepped at Osan for Vigilant Ace 16
A Navy aviation electronics technician walks the spine of an EA-18G Growler as part of an inspection on the aircraft during exercise Vigilant Ace 16 at Osan Air Base, Republic of Korea, Nov. 4, 2015. Exercise Vigilant Ace is a large-scale exercise designed to enhance the interoperability of the U.S. and Republic of Korea forces. (U.S. Air Force photo/Tech. Sgt. Travis Edwards)