 Supporters of Cooper's methods point to the near-universal use of his system in the International Practical Shooting Confederation and other forms of action shooting, while Applegate's supporters point to police incidents where officers trained in Cooper's methods discharge many rounds at close range (most measured in tens of feet (3 m) or less) with few (if any) disabling hits.The last years of Applegate's life were spent promoting his combat-pistol-shooting methods to police agencies.Applegate co-wrote "The Close-Combat Files of Colonel Rex Applegate" (with Chuck Melson), and was a founding member of the International Close Combat Instructors Association.