unchts discovery houston you are go at throttle up. commander steve lindsey acknowledging the call, discovery s three main engines throttle back up. lindsey is joined by pilot eric bowen, al drew and nicole staunt. mission specialist mike barrett and steve bowen. discovery s three main engines are bulg a rate that would drain an average swimming pool at 35 seconds. they produce more than 7 million pounds of thrust. 1:50 into the flight we re standing by for separation of the twin solid rocket boosters, traveling, the altitude 24 miles, downrange from the