Welcome to the Crime Scene Investigation web site!
Crime Scene - The Crucial Minutes
THE CRUCIAL MINUTES presents advanced evidence techniques in a simplified and enjoyable format.
Investigators, Evidence Technicians, Criminalists, and First Response Officers will gain enhanced information from crime scenes
and pick up new ideas and techniques.
This class has received high acclaim from all who have attended. It's for everyone
who wants to competently process a crime scene. It's for anyone who has ever felt overwhelmed or intimidated by the complexity
of a crime scene.
THE CRUCIAL MINUTES is a one-week, 40-hour class designed for officers and technicians
who have total responsibility for processing a crime scene. The first day's lecture includes the identification and collection
of physical evidence. During this segment of the class, issues are discussed such as first arrival responsibilities, securing
the scene, conducting a preliminary survey, photography (both still photos and video), legal considerations, crime scene search
methods, interrelationship of various types of crime scene documentation (photos, sketches, and notes), collection and packaging
of evidence, latent fingerprint considerations and final evaluation of the scene to assure completion of tasks.
second day of class is spent in a more detailed study of latent prints, including lecture, demonstrations, and class exercises.
Day three covers bloodspatter including velocity considerations in interpreting the bloodspatter, formulas for determining
angle of impact, cast off blood and back spatter, and transfer patterns. A practical exercise of blood spatter to determine
angle, convergence, and origin is included.
Day four includes discussion and practical exercises on gunshot residue/trace
metal detection and footwear/tiretrack documentation and casting. Trace metal topics include shortwave UV light exam, pattern
observation, and documentation. Gunshot residue topics cover proper swabbing techniques and common reasons for conflicting
and inconclusive results. Footwear/tiretrack topics include protecting the impression, photography techniques, dental stone
casting, dustprint lifting, sketching, and conclusions about footwear/tire track impresssions. The final day of class is spent
processing a mock crime scene.
About the Instructor:James R. "J.R." Davis served as an officer of the Houston Police Department
for twenty years, eleven of that as a crime scene investigator. During that period, he investigated hundreds of homicides,
plus countless other crime scenes. He holds an instructor’s license from Texas P.O.S.T. and also carries Master Peace
Officer Certification in Texas. J.R. has taught crime scene topics extensively since 1987 and is currently associated with
the Colorado Institute of Law Enforcement Training in addition to his classes taught for Forensic Identification Training
We offer one, two three, four and five day classes to meet the needs of your department.
General Crime Scene Investigation Fingerprints Footwear, Tire Track and Other Impressions DNA Human Remains Crime
Scene and Evidence Photography Video to Record Crime Scenes Packaging Evidence
Call Today 719-545-4325
Crime Scene Investigation presents advanced evidence techniques in a simplified and enjoyable format. Investigators, Evidence Technicians,
Criminalists, and First Response Officers will gain enhanced information from crime scenes and pick up new ideas and techniques.
The need for DNA Training
Law enforcement and State prosecutors are clamoring for information about DNA evidence--how to collect it, how to maintain
it, and how to use it in the courtroom. A well-meaning police officer may irreparably degrade DNA evidence by placing crime
scene evidence in the hot trunk of a police car for days. By all accounts, police officers everywhere are eager for information
about collecting and processing DNA evidence before it gets to the crime laboratory. When the National Institute of Justice
issued a pamphlet called `What Every Law Enforcement Officer Should Know About DNA Evidence,' the first printing of one million
copies was gone after just five months. Training should be a matter of course for all law enforcement. No rape kit will lead
to the perpetrator if the evidence is collected improperly.
Training must also be available for all prosecutors. The subcommittee heard testimony on this topic from the Vice President
of the National Association of District Attorneys, who stated:
Prosecutors who advise law enforcement agencies and forensic laboratories, as well as actively try cases involving DNA,
need to be fully versed in the capabilities, and vulnerabilities of this technology. This is not something you learn in law
school nor is it something that most of us can `bone up on' the night before trial. DNA technology is complex. Training in
the use of DNA evidence in a criminal investigation or a trial is crucial.