The North American Aviation XB-70 Valkyrie is the prototype of the B-70 nuclear-armed, deep-penetration strategic bomber for the U.S. Air Force's Strategic Air Command. In the late 1950s North American Aviation designed the Valkyrie bomber as a large, six-engined aircraft capable of reaching Mach 3+ while flying at 70,000 feet (21,000 m).The USAF eventually gave up fighting for its production, and the B-70 program was canceled in 1961. Development was then turned over to a research program to study the effects of long-duration high-speed flight. As such, two prototype aircraft were built, and designated XB-70A; these aircraft were used for supersonic test-flights during 1964–69. In 1966, one prototype crashed after colliding in mid-air with a smaller jet aircraft. Instructions: activate 8 to enable the wing angle through the vtol slider. To drop bombs, de-activate 8, return the slider to neutral, activate seven, and slide the slider up. Bombs activated through 1., 2 activates the parachute, and 6 activates the nav lightw. THE TRUTH IS OUT THERE