Dave Grossman

LT. COL., U.S. Army (Ret.) 
Director, Killology Research Group 

Lt. Col. Dave Grossman is a former West Point psychology professor, Professor of Military Science, and Army Ranger who is the author of many books, including On Killing (which is on the USMC required reading list), On Combat (also USMC required reading), Warrior Mindset, and Sheepdog! Meet Our Nation's Warriors, a book for protectors of all ages.

Col. Grossman’s research was cited by the President of the United States in a national address, and he has testified before the U.S. Senate, the U.S. Congress, and numerous state legislatures. He has served as an expert witness and consultant in state and Federal courts, and served on the prosecution team in UNITED STATES vs. TIMOTHY MCVEIGH. He helped train mental health professionals after the Jonesboro school massacre, and was also involved in counseling or court cases in the aftermath of the Paducah, Springfield, and Littleton school massacres.

Col. Grossman was called upon to write the entry on “Aggression and Violence” in the Oxford Companion to American Military History, three entries in the Academic Press Encyclopedia of Violence, Peace and Conflict and has presented papers before the national conventions of the American Medical Association, the American Psychiatric Association, the American Psychological Association, and the American Academy of Pediatrics.

Today he is the director of the Killology Research Group (www.killology.com), and in the wake of the 9/11 terrorist attacks he has written and spoken extensively on the terrorist threat, with articles published in the Harvard Journal of Law and Civil Policy and many leading law enforcement journals.

Since his retirement from the US Army in 1998, he has been on the road almost 300 days a year, for over 18 years, as one of our nation’s leading trainers for military, law enforcement, mental health providers, and school safety organizations. His hobby is shooting. He has a black belt in Hojutsu, and in 2014 he was inducted into the USA Martial Arts Hall of Fame.