Chase is correct and everyone has hit on it.
For College the ball is dead once it crosses the goal line, so no need to cover.
NFL, never touched it is a live ball.
So, don't be like McNabb and not knwo the rules, one day a rookie kick returner is going to let the ball go into the end zone in the NFL, run off the field and wonder why is was jettisoned the next day!!!
Actually, I was incorrect on the McNabb situation, I either forgot, or do not remember ever knowing a regular season can end up in a tie!! Oh well, take that for what it is, and I am a former small college and HS coach!
dogface