Tymitz called her the ghost; The pilots called her the marshmallow: the F-19A, the secretly developed joint stealth attack fighter. She had no corners that would give away her position to a distant radar, and her engines were buried deep within her fuselage and their exhaust mixed with ambient air for suppression of IR signature and noise. The price the air force paid for their invisible jet was steep, the aircraft was unstable, carried less ordinance, and could only reach Mach 0.8. Nevertheless, the benefits of the concept identified by the new buzzword “stealth” far outweighed the negatives. The enemy cannot shoot what they cannot see. The ability to slip into enemy territory and negate a bridge, fuel depot, armor column, or even early warning radar, without being noticed

predecessor I guess