1 00:00:01,550 --> 00:00:05,900 \h MIKE CURIE: T-16 seconds. Sound suppression water system has been activated, 2 00:00:05,900 --> 00:00:10,770 \h protecting Discovery and the launch pad from acoustical energy. 3 00:00:10,770 --> 00:00:15,500 \h We have a go for main engine start. T minus five, four, three, 4 00:00:15,500 --> 00:00:21,860 \h two, one, booster ignition and liftoff of Discovery, 5 00:00:21,860 --> 00:00:25,600 \h hoisting Harmony to the heavens and opening new gateways for 6 00:00:25,600 --> 00:00:31,250 \h international science. Discovery has cleared the tower. 7 00:00:31,250 --> 00:00:34,520 \h MISSION CONTROL: Houston now controlling. 8 00:00:34,520 --> 00:00:37,910 \h TERRY VITZ: Roger roll, Discovery. 9 00:00:37,910 --> 00:00:41,030 \h MISSION CONTROL: Discovery's roll maneuver is complete. It is now in a heads-down position, 10 00:00:41,030 --> 00:00:54,570 \h on track for its flight to the International Space Station. 11 00:00:54,570 --> 00:00:59,390 \h Discovery seven miles downrange at an altitude of two statute miles, 12 00:00:59,390 --> 00:01:03,250 \h flying at 600 miles per hour. Discovery's engines are throttling down as the 13 00:01:03,250 --> 00:01:07,920 \h orbiter passes through the area of maximum pressure on the vehicle.