The A-12 was a project for a Navy stealth attack jet: flying wing,
two man crew (I think), cancelled in '91 by then SecD Cheney
due mainly to cost over runs.

AKA The flying dorito.

Due mainly to being led down the primrose path by NAVAIR. The aircraft was
hugely overweight, GD was having serious problems with major composite
structures. The prototype was in final assembly and in big trouble.

A friend who worked the MacAir side of the program thought it was fixable,
but not on the cheap or on the schedule. I think it's very possible the PMA
didn't know the truth, less possible his deputy didn't. When the real word
finally came out, heads rolled and the A/C was cnx'd.

R / John