China backs North Korea......so if North Korea hit a Marine base in Japan.....the USA might attack North Korea..........we have tons of bases in South Korea........The Donald....might authorize the troops in South Korea.......China would back North Korea.....and we would have WW3..

An attack on one of allies is an attack on us said Don Trump last year when North Korea was sending rockets over Japan.....and right in front of it...

Japan plane crash: US Marine Corps planes involved in deadly midair ...

https://www.cnn.com/2018/12/05/politics/marines-corps-planes-japan.../index.html

3 days ago - At least one Marine was killed in the crash and the body has been ... based out of Okinawa,