Transcription: Liebergot and his backroom support engineers sat back and waited for the cryoster to correct the low hydrogen pressure readings. They didn't notice what was happening to the readouts for the two oxygen tanks. Their eyes were focused on the hydrogen tank readings. Shortly after initiating the cryoster, the astronauts made the following transmission. Okay, Houston, we've had a problem here. This is Houston, say again please. we've had a problem. We've had a main B bus under volt. Roger, main B under volt. Okay, standby 13, we're looking at it.
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