Distributia
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Corey JohnsonHimself - Narrator
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Gerard FryerHimself - Pacific Tsunami Warning Center
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Mike PolandHimself - U.S. Geological Survey
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Frank SansoneHimself - University of Hawaii
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Ken HonHimself - University of Hawaii
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Jeff SuttonHimself - Hawaiian Volcano Observatory
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J. Tuzo WilsonHimself - Geologist (archive footage)
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Chuck BlayHimself - The Edge of Kauai Investigations (as Dr. Chuck Blay)