In addition to being very quiet, suppressed weapons do not have visible muzzle flashes.

武器除了开火时非常安静之外，枪口也没有火焰。

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As the sun goes down, the crew dons night-vision goggles, scanning for muzzle flashes or smoke trails.

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Wuterich then turned to the houses, he told CBS. "I did not see muzzle flashes coming from the house, " Wuterich said.

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