AFAIK, there wasn't any evidence those Comets were being used, either in frontline or second-line service.
That's what I was wondering: are these front line units, or the equivalent of the USS Constitution, the USS oldest commissioned warship, manned by naval personnel, but is very clearly in a different category than "normal" commissioned ships.
USS Constitution - Wikipedia
en.wikipedia.org
Constitution's stated mission today is to promote understanding of the Navy's role in war and peace through educational outreach, historical demonstration, and active participation in public events as part of the Naval History & Heritage Command. As she is a fully commissioned Navy ship, her crew of 75 officers and sailors participate in ceremonies, educational programs, and special events while keeping her open to visitors year round and providing free tours. The officers and crew are all active-duty Navy personnel, and the assignment is considered to be special duty. She is usually berthed at Pier 1 of the former Charlestown Navy Yard at one end of Boston's Freedom Trail.