This article explores the various ways that the United States is protecting Japan, from its military presence to its mutual defense treaty. It looks at the long history of collaboration between the two countries, and explains how US forces stationed in Japan, US Navy patrols, and cooperation with Japanese Self-Defense Forces are helping to ensure the safety and security of both nations. Furthermore, it highlights how the US-Japan Mutual Defense Treaty has been instrumental in deterring potential attackers by making it clear that if one nation were attacked then it would likely result in retaliation by both countries.