Too close is not very close
THE 21 FOOT RULE .....REVISITED
In the early eighties, a young police officer named Dennis Teuller wrote an article for Chuck Taylor's Magazine titled "How Close is Too Close?". In the ground breaking article, Officer Teuller compared the time frames in which an adequately trained officer could draw and fire an accurate shot, and the time frame in which an able-bodied man armed with a contact weapon could cross a seven yard distance. The time was remarkably similar - 1.5 seconds for each.