I think you meant to say, we don't know how much military aviation activity there has been but we do know that if any planes flew, they all had transponders off.
Got it?
Now if you had reports from people near airbases that things were quiet, then I might think that there really was less activity.
If you want to be an intelligence agent, you need to learn to report only the facts. Not your interpretation of them, because you, as an agent, do not have all the info. Just the facts and nothing but the facts.