Funny story about that actually. A few years back, there was a DCM flight that was Enroute from somewhere in SC, I don’t recall now. It was a King Air 90 for what it’s worth. I had flightaware open and saw the DCM aircraft Enroute to the airport one evening that I happened to be walking the ramp. Decided to stay around and catch it land. Well it landed and dropped some passengers off and then fired back up to Knoxville. I got the tail number for the aircraft and punched it in and what’d ya know? It comes up, ‘this tail number is blocked from public tracking per request of the owner.’ So what’s the point of having a DCM? If they would’ve skipped the DCM callsign I wouldn’t have know they were coming, but since they had it I was able to track them..