Here's how NFL referees figure out where punts went out of bounds

For fun, here is how officials accurately spot a punt that goes out of bounds. Ref makes a line from where ball was kicked to where it lands and stands on that line. Wing runs along sideline until Ref sees he is on that line and tells the Wing to stop. Pretty simple. pic.twitter.com/fbGr8OynAp

— Cork Gaines (@CorkGaines) January 8, 2018