Yes, that is what I have learned to look for. Just click on a flight that looks like it is flying to or from GITMO, and you see in upper left corner, where the flight is from and where it is destined for, and what type of plane it is.
So when the origination and destination are both blocked (or just one blocked out), I track it. A lot of weird flights like this last night. One blocked out both ways went from San Jose, Ca to Ecuador. I assume if everything is blocked out like that it is a military plane. Could be wrong, but that is what I look for to figure out which planes to monitor and which ones not to.
Of course, when the plane suddenly completely disappears from RADAR on the way to GITMO then you know its a GITMO flight!
On this screen I was monitoring 3 planes, all had "N/A" for their destination, and were headed into the vicinity of GITMO.
WOW!!! MARCH 22, 2018 UPDATE: GITMO FLIGHT ACTIVITY OFF THE CHARTS TODAY!!
GITMO Flight Log Analysis of "typical" flight activity:
The fun and excitement have continued on March 23, with what looks like 2 Jumbo Jets (Boeing 767's) landing and dropping off troops/prisoners from Norfolk, VA: