FSX Steam Edition: North American XB-70 Valkyrie™ Add-On

A technological tour de force of epic proportions, the legend of the XB-70 Valkyrie™ very nearly surpasses the performance of this extraordinary aircraft. Built in the 1960s as a result of a USAF proposal for a supersonic bomber with high subsonic cruising speed and supersonic dash capabilities, the massive XB-70™ was to have carried the...