Video: Sounds of a drill instructor in training

Every Marine knows that drill instructors can yell, but you might not realize how much training they go through in order to be able to do it right.

Military Times’ Senior Video Journalist Colin Kelly got up close and personal with some students at DI school aboard Marine Corps Recruit Depot Parris Island, S.C. There, they learn how to project their voices correctly to avoid serious damage to their vocal chords.

The staff noncommissioned officers run drills just like they will in boot camp to train their voices not to break. The instructors at the schoolhouse stand a set pace count away from the Marines in training to make sure they’re yelling loud enough. Soon they’ll have to raise their voices to rise above the hustle of a squad bay full of recruits, and they need to make sure they’ll be heard.

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