tl;dr just like Missile Command, baby
Amid rising tensions over speculations of North Korea conducting missile tests, Japan has rolled out its ballistic missile defence system on Monday. Aerial footage shot by Japanese public broadcaster NHK showed launchers equipped with Patriot surface-to-air missiles deployed at three bases on the Japanese mainland, one – on the outskirts of Tokyo.
Meanwhile, Japan has refused to comment on the deployments, saying it does not want to reveal operational details to North Korea or alarm the public. Japan has taken similar measures before previous North Korean launches. It has never actually tried to shoot down a North Korean missile and was not expected to try to do so unless there was a clear threat to Japanese territory.
North Korea is believed to have moved ballistic missiles to its east coast, possibly in preparation for a test launch. That has further raised tensions on the Korean Peninsula amid threats by North Korea and large-scale war games involving US and South Korean troops.