Patriot anti - missile batteries appeared overnight this week in Japanese capital . They are deployed in case North Korea carries out its threat to test - fire a missile . These latest deployments are about fine-tuning . Would take between five and ten minutes for missile to reach skies over Tokyo . Japan has used these measures before during previous wars .
Patriot anti - missile batteries appeared overnight this week in Japanese capital . They are deployed in case North Korea carries out its threat to test - fire a missile . Would take between five and ten minutes for missile to reach skies over Tokyo . Japan has used these measures before during previous wars .