Received GRB at 10:19:20 UTC via Verbal Alarms.
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Confirmed it's NOT a test. Listed on GraceDB as Event E186620, with comment "This event detected by Fermi Satellite, GBM Instrument".
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H1 & L1 in Observation Mode. Will maintain this configuration from 10:19-11:19UTC
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Talked with LLO Operator (William P) and confirmed they also received alarm.