The Coast Guard Distinguished Service Medal (CGDSM) is a military decoration of the United States Coast Guard that was established 4 August 1949 and is presented to coast guardsmen for "Exceptionally meritorious service to the government in a duty of great responsibility." Prior to this date, members of the Coast Guard were eligible to receive the Navy Distinguished Service Medal. The Homeland Security Distinguished Service Medal, which replaced the Transportation Distinguished Service Medal in 2002, is another higher precedence Distinguished Service Medal that may be awarded to Coast Guardsmen. The Coast Guard Distinguished Service Medal is equivalent to the Army's Army Distinguished Service Medal, Navy and Marine Corps' Navy Distinguished Service Medal, and the Air Force and Space Force's Air Force Distinguished Service Medal.