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(next)JACK: If I pull this line here, it's a vent line, we open up the vent up there a little bit and let some hot air out, that will cause it to start descending faster. If I pull this line here, the red one, we terminate, because those are mechanical type clips at the top. Once they rip out they don't seal back. JOE: And you come down just like a rocket. (next) (previous) Global Contenders '97/'98 | Expedition '96/'97 | Fossett | Virtual Flight Science of Ballooning | Teacher's Guide | Resources | Transcript | Balloon Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print PBS Online | NOVA Online | WGBH © | Updated October 2000 |