Martin's XB-51 competed for the contract to equip the U.S. Air Force with a new jet attack bomber to replace the A-26 Invader in the night interdiction role. The package includes authentic skins for five of the color and markings schemes worn by the first prototype during its long career at the Air Force Flight Test Center and ten speculative skins in the colors and markings of B-57 operators that would have flown the B-51 had it won the production contract. Model by David Wooster, skins painted by Mick.