Reuters was brief by five sources on a race by Lockheed Martin and Raytheon to partner Japanese firms to develop a new radar for the proposed Aegis Ashore installations in Japan.
By Commander, U.S. Naval Forces Europe-Africa/U.S. 6th Fleet (Aegis Ashore Missile Defense Complex Romania) [Public domain], via Wikimedia Commons
The five government and industry sources said Raytheon has approached Mitsubishi Electric Corp while Lockheed is working with Fujitsu.
The new radars being proposed while be modifications to exiting radars from both American companies, both firms will make use of gallium nitride technology from their Japanese partners.