Is a spreadsheet really needed for this? It sounds like you just bought some weird food and forgot about it.

Bigger isn't always better if it trashes your fuel efficiency.

That 400,000 number is just for NASA and its main contractors. You have to add all the subcontractors and suppliers, probably pushing it over half a million. The idea that every single one of those people, plus their families, could keep a secret that huge is just wild. The sheer cost of paying them all off would be more than the actual program. It falls apart the second you look at the people involved.

That "old mill" detail just feels like a writing exercise to me. Found notebooks are usually just grocery lists.

Forget the number, worry about the manager itself. If that one app gets hacked or goes down, you're locked out of everything... that's the real risk.