Amid the chaos on the sideline and the frenzy within the stadium, there must be calm inside a coach’s headset during NFL games.

It’s a loud, intense, pressurized environment where communication is essential.

Quarterbacks need to hear the plays that are called into their helmet speaker through a one-way radio in order to relay it to the rest of the offense.

Try saying this with 85,000 fans screaming at you: “Green left twin nasty z peel tight pass 37 buster bluff x post y bite.”

Likewise, a designated defensive player has to get the call and provide it to his teammates in the huddle.

Coordinators talk with other assistants on the sideline, position coaches discuss strategy with players and the head coach can hear all the nearby chatter while having various conversations on his headset.

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