I don't have all the details now, but I will get them the next time I talk to my grandfather. Basically he was the navigator on some sort of naval aircraft. (I will get the name of the Ship and the type of plane when I can). So one night, when they are stationed off the coast of Korea, they go on a patrol, however the weather is really bad. Communications are out, and navigation is all messed up. They see a land mass coming up, and assume it is Korea, but then the communications come back online, and the admiral (or some other high ranking officer) is yelling them to "Turn the FUCK around! You are in Chinese airspace! We are looking at the start of World War 3!". Needless to say, they got the fuck out of there.
TL;DR: Grandfather Almost started WW3.