Japan Orders Upgrades for its 4 E-767 AWACS

http://www.defenseindustrydaily.com/japan-orders-4-e767-awacs-radar-mission-upgrade-kits-for-147m-02215/

In May 2006, the Defense Security Cooperation Agency notified Congress of a possible Foreign Military Sale to Japan of four sets of Airborne Early Warning (AEW) and Command, Control and Communications (C3) mission equipment/Radar System Improvement