An alien crewmember with a D-1 permit leaves the vessel in a U.S. port and fails to return. The first report you make should be to the __________.

Correct Answer: Option B — Immigration Service

Immigration and Nationality Act regulations require alien crewmembers jumping ship in a U.S. port on a D-1 transit visa to be immediately reported to the Department of Homeland Security's Immigration and Customs Enforcement (Immigration Service), tracking desertions and maintaining port security compliance.