Summary By Ellen Gray, NASA's Goddard Space Flight Center. During the rehearsal "green cards," or anomalies, are thrown into the mix so that in the event that they happen on launch day, the team knows how to deal with them, said Glenn Bock, one of GPM's test conductors who coordinates activity in the control room and with the other control rooms, both here at Tanegashima and at Goddard, where the GPM Mission Operations Center is located.

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