Reaction Time Lethal Force Encounter Shooting Scene Considerations

“The essential elements to be considered are the inherent danger reasonably perceived at the time and the physical realities that apply at the time. These physical realities include the factors of action versus reaction times, the abilities of the involved parties, the limited time available to recognize, react, initiate and implement a response, the sensory distortions that will occur in any high stress lifethreatening incident and the limited means available to compel a timely halt to the threatening activity. These elements must be judged from the perspective of a reasonable officer within the incident and not with the application of 20/20 hindsight.” [Ref. 15 Patrick & Hall] The justified use of force elements hold true whether Officer or Citizen. Officer or Citizen need to be viewed from the perspective of the incident and not with 20/20 hindsight. To understand the timing of a lethal force encounter we need to discuss reaction time, both the mental process and the physical process.

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Determining Distance Between Shooter And Victim Using Blood And Back Spatter

ABSTRACT

This project was developed in hopes of being able to answer questions about a crime scene that have not yet been answered. Blood pattern analysis is a crucial part of crime scene reconstruction. Analyzing the blood spatter left behind at most crime scenes allows for investigators to determine where the victim and the assaulting weapon came into contact with each other, also known as the point of convergence. They can also tell what type of weapon the assailant used to commit the crime with by analyzing the velocity of the spatter. However, a phenomenon known as back spatter analysis or as blow back analysis may also be left behind and studied by the investigator. The intention of this research is analyzing back spatter of objects shot with three different weapons at varying distance. Different ammunition will also be used. The weapons will be a Walther P22, 9mm Walther PPS, and a .380 Smith & Wesson Bodyguard using Critical Defense

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