For FS2004 : The North American XB-70 Valkyrie was a prototype supersonic bomber of the U.S. late 1950.

Here are three imaginary planes. Very nice to fly for those who like this type of aircraft. Extremely fast speed ! Have fun !

CF-220 Grizzly (version 4, revised 2013) for FS2004. Fighter aircraft ultra high tech optimized for air superiority role. created by Brian Sturton (Concept Aircraft). It is a fictional airplane, however, it is superb.