51st state
Guam (formally the Territory of Guam) is an unincorporated and organized territory of the United States. Located in the western Pacific Ocean, Guam is one of five American territories with an established civilian government.
Guam Insular Force Guard
After gaining control of Guam during the 1898 Spanish–American War, the United States declared the entire island of Guam a naval installation that led to the US Navy governing the island.