I suspect that at least some of the messaging is deliberate. Some aircraft are supposed to be secret. Aside from UFOs, what other cover story is there? It's the

I suspect that at least some of the messaging is deliberate. Some aircraft are supposed to be secret. Aside from UFOs, what other cover story is there? It's the only thing they have to try to reduce or obscure information about aircraft that occasionally are observed when they aren't supposed to be public knowledge.