2. Overview With trending Crime occurring in our nation, it is important to identify, recognize and understand the potential threats against First Responder Professionals. Therefore it is important we understand that we may be involved in a Crime/Fire scene investigation without prior knowledge and may be required to preserve/collect evidence and testify in a court of law.

3. Purpose  Learn the basics of Evidence  Understand the importance  Recognize the evidence  Promote Situational Awareness both responding and on scene

4. Objectives Explain Locard’s Exchange principle List the three components of the evidence triangle Differentiate between primary and secondary crime scenes Identify common hazards associated with crime/fire scenes Understand the purpose of a crime scene log Know the different types of impression evidence Explain the value of physical evidence in a criminal investigation Identify the determinations that can be made from different types of physical evidence

5. Understanding the Scene  Treat all Fire Scenes as an Arson unless direct evidence proves otherwise  Don’t rely solely on dispatch response  When responding/arriving to Medical Calls, be able to recognize indicators that may be present such as: sexual abuse, assault, controlled substances  Accidents that may appear suspicious or not making sense to you may be an indicator that there is more to the situation

6. Crime Scene Location where a crime occurred including line of Approach & flight path of the suspect

7. Types of Crime Scenes Primary Scene -where original or first criminal act occurred Secondary Scene - Any crime scene(s) associated with primary scene

8. Scene Victim Actor Evidence Triangle

9. Locard’s Exchange Principle -When two objects come into contact, there is always a transfer of material from one to the other

10. Major Functions at Crime/Fire Scene Overall coordination Technical Services Investigative Services

11. Overall Coordination Performed by lead investigator or Incident Commander Ensures continuous flow of info. Between team members Evaluates potential safety issues Allocates resources

12. Technical Services Identification, documentation, packaging and transporting of patient

13. Investigative Services Includes a variety of investigative functions depending on nature of scene -Office of State Fire Marshal -Maryland State Police -Wicomico County Sheriff’s Office -Local Fire Dept.

14. General Crime/Fire Scene Procedures Arrival & Approach Secure & Protect Scene Conduct a preliminary survey Communicate with Superior/Outside agencies Document the scene Conduct final survey of scene Release Scene

15. Arrival & Approach Consider potential threats before you arrive/plan response Upon arrival, determine nature of situation/stabilize scene Is there a crime in progress/scene secure Are there natural hazards that can inhibit or harm 1 st responders Assist victim

16. Secure & Protect Scene

17. Crime Scene Log In Name/Agency Date & Time In/Out Reason Officer in charge

18. Cardinal Rule Of Scene Management Never touch, change, or alter anything until it has been documented, identified and photographed -Fire Scene if suspicious or looks out of place -Accident Scene Fatal or near fatal -Crime Scene ( don’t move items near patient unless absolutely needed.) **Unless potential exists the item of evidence will cause further harm or obstruction**

19. Communicate with Superiors/ Other agencies Communicate findings & results of scene survey -Notify Officer In Charge ASAP -Notify police if needed -Contact ME if death involved

20. Hazards Associated With Crime Scenes

21. Types of Hazards Chemical -includes clandestine labs Chemical, biological, and nuclear -weapons of mass destruction Structural -explosives -building collapse

22. Biohazards associated with Crime Scenes

23. Hepatitis B/C Infectious disease of liver Contracted same way as HIV HIV can survive in dried blood at room temp up to 1 week HIV vaccine available HCV more serious than HIV No preventive treatment

24. Forms and Types of Evidence  Real  Demonstrative  Direct  Circumstantial  Physical  Intangible  Testimonial

25. Real Evidence  Real evidence is Physical evidence  Evidence you can actually touch  Evidence that is able to be retrieved at the scene

26. Demonstrative  Defined as : evidence that demonstrates the situation of the scene

27. Direct Evidence  Defined as: The facts of the scene, Evidence directly related to the scene

28. Circumstantial  Defined as : Inference (coincidence), more likely than not

29. Physical Evidence Any tangible object that can establish a crime has been committed, or provide a link between the crime/ its victim, or the crime and its actor

30. Physical Evidence  DNA  Fluids  Organic  Fruits of the Crime

31. Value of Physical Evidence Establish the elements of the crime Provide Investigative leads ID Suspect or link suspect to victim and or scene Provide expert testimony in court Exonerate the innocent Induce a confession from suspect 5% of Evidence is Physical

32. Testimonial  Defined as: written or oral assertion offered as proof of truth in court.  95% of evidence is testimonial

33. Review  Situational Awareness prior to and arrival on scene  Recognize the evidence of a crime if present  Documentation  Understand Scene Management  Understand the Hazards  Know your resources  Communication  Understand the value of evidence  Understand the importance of preservation  Testimony