I’m afraid you’re living fifty years in the past.
The leakproof lockheed doesn’t exist anymore, neither does the loyal president or even the loyal military.
It would be hard to argue against your point, but I will say this. I firmly believe something replaced the SR-71 Blackbird. They were testing in over the Western United States in the 90s. It’s tell-tail engine exhaust dynamics were a dead give-away.
That is what needs to be replaced now IMO. If this is true, and it may not be..., but if it is they did keep it quiet even in these unsettling times.