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.