Although they don’t get to ride together as often as they’d like, “The Book of John J” series premiere features brothers John and Eric “E-Jack” Jackson reconnecting and shredding some long awaited lines in backcountry blower pow. The two feed off each other and end up tackling some pretty burly descents. The pinnacle of their brotherly trip came with riding Mach-speed lines down the 65-degree “Dirty Tooth” under blue skies and sunshine. The familial force is strong in these two.