In this Monday, Jan. 18, 2016 photo, former New Orleans Saints NFL football player Steve Gleason and his wife, Michel, pause as their 4-year-old son, Rivers, climbs onto his father's lap during an interview in New Orleans. “GLEASON,” a feature-length documentary that gives an unfiltered look at his life with ALS premieres at the Sundance Film Festival on Saturday. (AP Photo/Jonathan Bachman)