Transportation?
I thought pre- DHS the Coast Guard belong to the Treasury Department.
Nope it was Transportation.
Key Dates in Coast Guard History
1790: Revenue-Marine (later renamed Revenue Cutter Service) created within the Treasury Department
1915: Revenue Cutter Service combines with the U.S. Lifesaving Service (est. 1848) to create the Coast Guard
1939: U.S. Lighthouse Service (est. 1789) added
1946: Steamboat Inspection Service (est. 1838) added
1967: Coast Guard transferred to Department of Transportation
2003: Coast Guard transferred to Department of Homeland Security
http://www.uscg.mil/top/missions/