In the latest installment of the sports documentary series State Of Play on HBO, Peter Berg examines the issue of safety in football. Berg begins by telling the story of a Texas high school player who was paralyzed in a 2003 game and then died a few years later. Then he explores how the NFL and NFL Players Association are trying to improve coaching and standards.

At one point, Berg says to Cowboys owner Jerry Jones, "If I were the coach of your son -- if you had a 12-year-old son -- what would you ask me?"

Jones responds, "Coach, are you showing him where to put his head" It'd just be that simple."

This episode premieres Tuesday at 10 p.m. ET/PT. Here's a preview:

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