In the race to field the first sixth-generation fighter, the U.S. Navy is pressing ahead as the Air Force pauses its program amid concern that it's too expensive and might not be the best answer to emerging threats.
Northrop Grumman won’t bid on the Next-Generation Air Dominance fighter, but might go after the Navy's F/A-XX and Air Force’s Collaborative Combat Aircraft programs, company CEO Kathy Warden said July 27.