Well in that case congratulations. You've just made it easier. Now you don't even have to track them. You just have to look for the blacked out box, the "error we can't show you this", reused imagery from their long running historical imagery dataset, or improperly fused/healed imagery after alteration.

So now you don't have to do the tracking, just find the hole.

And then you can use a non-US provider to get direct imagery now that you know exactly where to look.