Thanks. Please go ahead and post it. I won’t have time until this coming weekend. There are 3-4 other articles by Rogoway on the same topic - they are linked in the article, but each is fascination in its own right.
As you said, the new Active Electronically Scanned Array (AESA) radar is a game changer. Perhaps these "objects/craft" were probably often nearby but previously undetected. But now they are something to be dealt with.
The Navy, the Pentagon, and the government is to be commended for disclosing this early on. That too is a game changer.
I will post selective quotes from the main article that capture the heart of it (much as you did in your comment above) and post Fair Use snippets of the linked articles as appropriate.
Back to the bottom line, it is hard to imagine/guess what these things are. Doubtful they are our craft (drones?) from another gov't branch because they are running the risk of collision with our aircraft in training exercises with a potential loss of very expensive equipment and lives.
Doubtful they are from other countries because of their VERY advanced operating capacity/nature. This would be doubly troubling because they are operating within our "restricted" training areas critical to our national security.
That leaves us with the question of not only what they are but whose they are.
At least this time, the American public is, for the most part, as fully informed about this matter as the government.