Patriots defensive coordinator Terrell Williams was back at practice on Tuesday after he left early the day prior and was treated for dehydration.

A scary moment played out for Patriots defensive coordinator Terrell Williams during Monday's practice, as the 51-year-old was forced to leave the session early and had to be treated for dehydration.

New England Patriots defensive coordinator Terrell Williams collapsed during Monday's practice and was treated for dehydration, per Matt Geagan of CBS News.