Sean Kearns isn't just part of snowboard history, he helped build it. From the Whiskey films that defined an era, to shaping the culture behind the scenes as a filmmaker, producer, and entrepreneur, Sean Kearns has been quietly steering snowboarding's direction for decades. His film legacy runs deep: Whiskey 1-4, 20/20, Technical Difficulties, to the Forum movies; The Resistance, True Life, Nixon…