Drone, submarine engine noise:
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Armored personnel carrier starts, expects,
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Machine gun firing in the distance, Tank shot
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Tank shot, gunfight, War
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Armored personnel carrier passes by
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An armored personnel carrier approaches,
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Closing a submarine hatch, Opening
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Submarine engine starting, surface movement
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Closing the hatch of a submarine, Opening
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Submarine dashboard
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Opening the submarine compartment, Closing
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Tank drives by
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Submarine alarm, Alarm, alarm
★★★★★