(FILES) This file photo taken on July 12, 2016 shows a Lockheed Martin F-35 Lightning II taking part in a flying display at the Farnborough Airshow, south west of London. The US Marine Corps said January 10, 2017 it has sent a squadron of F-35B fighters to Japan, marking the first operational overseas deployment for the controversial jet that is under scrutiny from President-elect Donald Trump. The planes' deployment to Marine Corps Air Station Iwakuni on Honshu Island marks a major milestone for the F-35, which has been bedeviled by technical glitches and soaring cost overruns. / AFP PHOTO / ADRIAN DENNIS