“In 2010, USAF initiated a study to determine the costs of retaining F-22 tooling for a future Service Life Extension Program (SLEP). A RAND Corporation paper from this study estimated that restarting production and building an additional 75 F-22s would cost $17 billion, resulting in $227 million per aircraft, or $54 million higher than the flyaway cost. Lockheed Martin stated that restarting the production line itself would cost about $200 million. Production tooling will be documented in illustrated electronic manuals stored at the Sierra Army Depot. Retained tooling will produce additional components; due to the limited production run there are no reserve aircraft, leading to considerable care during maintenance. Later attempts to retrieve this tooling found that the containers were empty.”
If you believe the report in the last sentence. Likely hidden and secret from certain politicos. You don’t lose the tooling for the F-22 Raptor in a secure location like the Sierra Army Depot.
Like the atomic secrets at Los Alamos, things do find their way to enemies if the bigwigs want them to.