The only people perhaps more obsessive than type designers are builders of model aircraft. TLai Enterprises offers a font for sale called AmarilloUSAF. With its straight lines and blocky look, AmarilloUSAF provides the correct, forthright feel of the real thing. See also my post Fightin’ Font Friday 2, fonts from action movie posters.
AmarilloUSAF Pro—Enhanced US Air Force Aircraft Marking Font