The Coastal Riverine Group 1 Detachment Guam is a specialized unit within the United States Navy. This group operates coastal and riverine operations, which involve missions on rivers, coasts, and near-shore areas in support of naval operations. Specifically located on the island of Guam, they are responsible for conducting various tasks such as patrols, surveillance, interdiction, and visit, board, search, and seizure (VBSS) operations to ensure maritime security and stability in the region. Their role is crucial in maintaining the United States' military presence in the Asia-Pacific region.