You can't go to, watch, listen to or even talk about an NFL game without "the refs" getting brought up. "The refs" are an integral part of the game. Not only do they call fouls and assess penalties, they're also responsible for making sure everything happens: timing, spotting the ball, counting heads, keeping track of breaks...
NFL football just couldn't be played without the constant effort of seven-person "ref" crews that oversee every NFL game.
The thing is, they aren't "the refs." There's only one Referee, and Referees have very specific job duties within the crew. The Umpire, Head Linesman, Line Judge, Field Judge, Side Judge and Back Judge all do, too.
Far from just putting zebras everywhere and assuming everything will get called, the NFL Rulebook wisely calls out all of the responsibilities all seven officials have before, during and after the game.
What are they? Click "Next" to find out what the responsibilities of each NFL official are.