Guam is one of the United States’ most important bastions in the Western Pacific—but protecting it won’t be easy. Stationing in the Navy’s Standard Missile 6 (SM-6) on Guam is an absolute must, U.S.

During a recent webcast, the head of the U.S. Missile Defense Agency, U.S. Navy Vice Adm. Jon Hill, provided an updated overview on the array of air defenses being deployed to Guam. The small island, ...