Scobee was assigned commander for the ill-fated
STS-51-L mission, after having previously flown
Challenger in
STS-41-C as a pilot. The mission, designed to deploy a satellite to study the approaching
Halley's Comet and to inaugurate the
Teacher in Space Project, was delayed numerous times due to bad weather and technical glitches. When the mission finally did lift off the
pad, a solid rocket booster
O-ring seal failure
destroyed the shuttle 73 seconds into the flight, killing Scobee and the other six crew members; the disaster, viewed live on national television, prompted several days of national mourning, as well as a major shakeup at NASA. He died a
lieutenant colonel. At T+68 into the mission, the CAPCOM
Richard Covey informed the crew that they were "go at throttle up", and Scobee confirmed the call—his last recorded words were his response, "Roger, go at throttle up." The shuttle broke up at an altitude of 48,000 feet (14.6 km). Some experts, including one of NASA's lead investigators,
Robert Overmyer, who was closest to Scobee, believed most if not all of the crew were alive and possibly conscious during the entire descent until impact with the ocean. After the investigation, Overmyer stated, "I not only flew with Dick Scobee, we owned a plane together, and I know Scob did everything he could to save his crew. Scob fought for any and every edge to survive. He flew that ship without wings all the way down." ==Family==