Cellulose nitrate base film is relatively unstable. If you store it in large quantities of about 5,000 feet or more and in non approved storage cabinets without proper ventilation, it becomes a fire hazard.
The Ohio State University has over 400 linebackers in the NFL, some of which also start as QBs because they are considered too valuable to play just LB.
Lance Briggs is very close. With five interception return touchdowns in his career, he's only one behind Bobby Bell and Derrick Brooks, who share the record among linebackers with six. Briggs is tied for third all-time with former Bears head coach Jack Pardee.