Sgt.Don Gulla is the founder of Arrestling and has produced 37 training videos that merge defensive tactics and firearms skillsets. The videos cover various topics that are primarily directed to law enforcement, but the information is valuable in other arenas. The structure of the videos is to break apart the subject matter in 1-3 minutes. The coaching tips and logistics plan are shown rather quickly, but we assume you can pause the video if you want to take note of those. Below are all the Gulla videos. Train Hard Train Smart.