Retired Army Lieutenant Colonel and renown author Dave Grossman essentially created the field of killology. His books On Killing and On Combat have made an entire generation of military, law enforcement, and first responders more ready for the stressful, sometimes violent situations they face. In this episode, you discover what happens in the body during combat, including visual distortion, auditory exclusion, memory distortion, vasoconstriction, and loss of bladder control.