A Sailor's service prior to this date does not qualify the member for the ribbon.A standard tour is defined as at least two years of duty with no disciplinary action, above average evaluations, and adherence to physical and military bearing standards of the Navy Ceremonial Guard.Sailors must also be in a drilling status for 18 months, and reach at least Standard Honors qualification within one of the Guard's four platoons (firing party, casket bearers, color guard, or drill team).It can also be presented to personnel who complete a successful tour aboard USS Constitution, defined in this case as a tour of 24 months, completion of all required qualifications, and maintaining outstanding personal appearance and a discipline free record.The only awarding authorities for the Navy Ceremonial Duty Ribbon are the commanding officer of the United States Navy Ceremonial Guard, headquartered at Joint Base Anacostia-Bolling in the District of Columbia; and the commanding officer of USS Constitution, which is berthed at the Charlestown Navy Yard.