So I'm not publicly political, but news agencies seem to be agog over the value of said jet... and nobody seems to be talking about the OpSec exposure from taking on this equipment.

For reference (not that it's at all the same), but if I inherited a 14 year old software project, and had less than a year (or hell, even if I had all 4 years) to make certain without a doubt that I caught all the booby traps...

No I don't think I can ethically promise that.

The same would apply if the jet came from the UK. Canada. Mexico. Anywhere else but from a supply chain they control.