You mean, like when the Soviet Union shot down Korean Air Lines flight 007 in 1983 in the Sea of Japan (a commercial airliner carrying a U.S. congressman)? There was no war then between the U.S.S.R. and the U.S.A. And with Obama firmly in control, there will be no war with China. Heck, Obama would blame our allies if their plane were shot down by China.
I agree that we will not go to war with China, but Japan might.