Lieutenant John Morrison served in combat as a Marine sergeant, and retired as a senior lieutenant from the San Diego Police Department, having served there as Director of Training, Commanding Officer of SWAT and division executive officer. He has taught, written and lectured widely on training, tactics and leadership.  John Morrison is the co-author of Contact & Cover: Two-Officer Suspect Control.

According to the book description of Contact & Cover: Two-Officer Suspect Control, “A powerful new concept in policing has emerged which allows the peace officer and partner complete tactical advantage over their suspect, and this concept is known as Contact & Cover. Easy to implement and follow, the contact officer is responsible for the "business" of an encounter with a suspect while the cover officer protects that officer from assault and suspect escape. Contact & Cover can also prevent officer disarming, a leading cause of officer fatalities. The facts indicate that most police officer assaults take place in the presence of other officers, more officers are being killed with their own guns, there are more drugged, drunk and mentally/emotionally disturbed people on the street than ever before, suspects are frequently armed, and a number of high-risk arrest situations are occurring within view of potentially hostile crowds, representing a growing threat to police.

These situations demand an effective set of contingencies which Contact & Cover offers. Numerous procedures and practices are analyzed, such as the use of hand signals or code language not understood by the suspect, establishing "force presence" by the cover officer, switching roles as necessary, and much more. By focusing on the well-defined enforcement and protection responsibilities outlined in Contact & Cover, lives will be saved, officer fatalities prevented, and, by providing a state-of-the-art program of officer training to departments, officers can be kept abreast of the latest techniques available in the field which will help ensure their lives won't be wasted due to ineffective suspect-control procedures.”