Mission U.S. Pacific Command (USPACOM), together with other U.S. Government agencies, protects and defends the United States, its territories, Allies, and interests; alongside Allies and partners, promotes regional security and deters aggression; and, if deterrence fails, is prepared to respond to the full spectrum of military contingencies to restore Asia-Pacific stability and security. Commander's Intent Purpose. To protect and defend the United States, its territories and interests; to promote regional security and deter aggression; and to be prepared to respond ...