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.
List of earthquakes in Guam
Earthquakes in Guam are infrequent but are often accompanied by tsunami. The small island, which is an unincorporated and organized territory of the United States, lies at the extreme southern end of the Mariana Islands and at the eastern margin of the Philippine Sea Plate.