The NFL scores points by asking for more training and accountability for its referees, but the NFLRA has built-in leverage. Remember 2012's disaster?

Negotiations involving NFL and NFL Referees Association reps were cut short when the league walked out of meetings early, according to the NFLRA. Here's what we know.

The NFL scores points by asking for more training and accountability for its referees, but the NFLRA has built-in leverage. Remember 2012's disaster?