I dunno, there are several SR-71s sitting outside with completely unrestricted access. https://www.sr-71.org/blackbird/locations.php https://www.sr-71.org/blac

I dunno, there are several SR-71s sitting outside with completely unrestricted access. https://www.sr-71.org/blackbird/locations.php https://www.sr-71.org/blackbird/locations.php Of course, they've been gutted of electronics and engines, but still, anybody can walk right up to one with calipers and a tape measure... Good luck affording that much titanium though. It's a PITA to form and weld, too.