Joseph David Emerson of Pleasant Hill, California, told police he was suffering from depression and had taken psychedelic mushrooms 48 hours before the flight.
Jonathan J. Dunn, pilot accused of threatening to shoot airline captain, is Air Force Reserve office
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He also said he had not slept in more than 40 hours, according to the document.
Off-duty pilot said 'I'm not OK' before trying to cut engines midflight, charging documents say
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