Coast Guard Investigative Service

The Coast Guard Investigative Service (CGIS) is a division of the United States Coast Guard that investigates crimes where the U.S. Coast Guard has an interest. It is composed of civilian (GS-1811), active duty, reserve enlisted, and warrant officer special agents.
Mission.
The mission of the Coast Guard Investigative Service (CGIS) is to conduct professional criminal investigations, engage in law enforcement information and intelligence collection, provide protective services, and establish and maintain law enforcement liaison directed at preserving the integrity of the Coast Guard, protecting the welfare of Coast Guard personnel, and supporting Coast Guard and Department of Homeland Security (DHS) maritime law enforcement and counter-terrorism missions worldwide.
Authority.
The Coast Guard Investigative Service is a federal law enforcement agency whose law enforcement authority is derived from . This authority provides for Coast Guard special agents to conduct investigations of actual, alleged or suspected criminal activity; carry firearms; execute and serve warrants; and make arrests for all crimes under the jurisdiction of the United States. The criminal investigative function of the Coast Guard Investigative Service is similar to that of a major crimes unit at a large metropolitan police department, investigating crimes such as those "internal" to the Coast Guard, including fraud, larceny, homicide and rape, as well as "external" investigations of maritime-related crimes ranging from migrant and drug smuggling, homicide, rape, false distress calls, and violations of the environmental laws. The Coast Guard Investigative Service is a centralized directorship managed by a professional criminal investigator who reports directly to the Coast Guard's Vice Commandant of the Coast Guard. It is located outside the Coast Guard's operational chain of command.
CGIS Special Agents.
The CGIS special agent workforce is composed of active duty military, reserve, and civilian personnel. All CGIS Special Agents are sworn personnel with powers of arrest and warrant service. All CGIS Special Agents have full arrest powers under Title 14 section 95 of the United States Code.
The active duty military component is composed of enlisted personnel, chief warrant officer and commissioned officer investigator positions. The civilian component is composed of to SES criminal investigator positions.
Firearms.
The Coast Guard Investigative Service's standard issue firearm is the SIG Sauer P229R DAK or SIG Sauer P239 DAK in .40 S&W.