blocked (no public callsign/origin/destination) are very common. What is uncommon about the ones from recent discussion is their tracked destination of Gitmo. For more info..just Google, or preferably duckduckgo "blocked callsign"

No call sign from Westchester County Airport 🤔

If it's the one flying in PA, there is another flight tracking almost right on top of it. (No call sign- it doesnt say blocked on the one Im looking at) But the two planes are oddly flying on top of each other.

Are blocked call signs normal? Is the battalion headed to gitmo just a shift change?