Master Sergeant Chris Grall (U.S. Army, ret.) has 26 years of military experience and over 15 years of Instructor experience dealing with Law Enforcement topics. Chris has served on a U.S. Army Special Forces Operational Detachment Alpha as an Engineer Sergeant, Intelligence Sergeant, and Operations (Team) Sergeant. Before that he served in a Long Range Surveillance Detachment and an Infantry Unit. Chris is currently working as a government contractor and offers subject matter expertise to authors through his consulting company, TactiQuill.