Transcription: Good roll program confirmed. Challenger now heading downrange. Velocity 2,257 feet per second. Altitude 4.3 nautical miles. Downrange distance 3 nautical miles. Engine's throttling up. Three engines now at 104 percent. Challenger, go with throttle up. Challenger, go with throttle up. Go ahead. Flight, J.C., we've had negative conduct. Lost downlink. OK, all operators, why'd you data carefully? Flight controllers here looking very carefully at the situation. Obviously a major malfunction. We have no downlink.