Coast Guard District 9

District 9 is a United States Coast Guard district located at the Anthony J. Celebrezze Federal Building in Cleveland, Ohio. District 9 is responsible for all Coast Guard operations on the five Great Lakes, the Saint Lawrence Seaway, and surrounding states accumulating 6,700 miles of shoreline and 1,500 miles of international shoreline with Canada.
Command and Duties.
Led by a rear admiral, District 9 includes 6,000 active duty, reserve, and civilian personnel. District 9 predominantly serves duties such as search and rescue, maritime safety and security, environmental protection, maritime law enforcement, aids to navigation, and icebreaking.
Sectors.
District 9 is further subdivided into several sectors. These include:
Stations.
District 9 is constructed of 48 active stations located in New York, Pennsylvania, Ohio, Michigan, Illinois, and Wisconsin, Indiana and Minnesota.
Air Stations.
Air Station Detroit is located on Selfridge Air National Guard Base near Detroit, MI. Primary missions include Search and Rescue, Law Enforcement, domestic icebreaking operations, Marine Environmental Protection (MEP), Rotary Wing Air Intercept (RWAI) and mission support for local, state, and federal agencies. Air Station Detroit is responsible for the southern portion of Lake Huron, Lake St. Clair, Lake Erie, and Lake Ontario.
Air Station Traverse City is located at the Cherry Capital Airport in Traverse City, MI. Air Station Traverse City operates all of Lake Michigan and a large portion of Lake Superior and Lake Huron. Primary missions include Homeland Security, Law Enforcement, and Search and Rescue. Air Station Traverse City has implemented plans to transition from its current four MH-65 Dolphin helicopters to three Sikorsky MH-60 Jayhawk helicopters.
Cutters.
District 9 has ten active cutters operating in all five Great Lakes. Cutter is a term used by the U.S. Coast Guard for its commissioned vessels. They are 65 feet (19.8 m) or greater in length and have a permanently assigned crew with accommodations aboard. They carry the ship prefix USCGC.
Marine Safety Units.
District 9 comprises four Marine Safety Units (MSU) and two Marine Safety Detachments (MSD). 
Aids to Navigation Teams.
District 9 comprises seven Aids to Navigation Teams (ANT).