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Shot of air force members sitting in audience listening. Cut to shot of man in suit standing in front of table talking to them. He is giving a speech about weightlessness in space and the absence of gravity when the ship takes off. He talks about how they simulate weightlessness on the ground. Cuts to shot of chart that shows the line at which weightlessness occurs in the air. A mountain is in the picture for reference of how high up a spacecraft must go before reaching weightlessness.