Charles “Sid” Heal retired as a Commander from the Los Angeles Sheriff’s Department in 2008 after nearly 33 years of service, more than half of which was spent in units charged with handling law enforcement special and emergency operations. He was present for emergency operations at the Oklahoma City Bombing, the 1992 Los Angeles Riots, the 1994 Northridge Earthquake, and the 2001 attacks. Sid also dedicated 35 years to the US Marine Corps Reserve and served four combat tours. He is the author of Sound Doctrineand Field Command, as well as more than 180 articles on law enforcement subjects. He holds a bachelor’s degree in Police Science from California State University, a master’s degree in public administration from the University of Southern California and a master’s degree in management from California Polytechnic University. He is also a graduate of the FBI’s National Academy and the California Command College. He is the President of the California Association of Tactical Officers and the national chairman for Strategy Development for the National Tactical Officers Association. He is a frequent teacher at the U.S. military war colleges and has taught throughout the world.