That may be. BUT... would they necessarily tell the public ?
No, they don’t make public statements often but the information that is not classified is made public soon after it happens. A plane with 239 passengers that was shot down would cause worldwide consequences. The NSC, the president, and the Pentagon would have been on alert. The UN and our allies would be informed. I have seen no sign of an international incident.
Who knows, with the clown in the White House?