US, Japan participate in Keen Edge 16
Japan Self-Defense Force and U.S. military members work on a scenario during exercise Keen Edge 16 at Yokota Air Base, Japan, Jan. 21, 2016. The exercise focused on bilateral coordination, force protection, host nation support, ballistic missile defense and non-combatant evacuation operations in Japan. (U.S. Air Force photo/Senior Airman David Owsianka)