The NFL docuseries “Hard Knocks” goes behind-the-scenes of the NFL’s pre-season. This year it also goes behind-the-scenes of python hunting in Florida, as Buffalo Bills defensive end A.J.

How do you know the NFL season is almost back? The start of HBO's Hard Knocks is the first tease of the start of a new season.

Episode 1 covered the team's arrival to training camp at St. John Fisher College, put a particular spotlight on the Bills' superstar quarterback, and notably did not touch on the contract dispute between the team and standout running back James Cook that's provided headlines over the last several days.