13 Rules of Gunfighting. Credit goes to CJ Grisham, an soldier of 17 years. I only made minor edits. www.businessinsider.com/cj-grishams-13-rules-of... Feel fre 13 Rules of Gunfighting Credit goes to CJ Grisham an soldier 17 years I only made minor edits www businessinsider com/cj-grishams-13-rules-of Feel fre