Canine human scent identifications with post-blast debris collected from improvised explosive devices

Area of Science:

• Forensic Science
• Canine Behavior and Training

Background:

• Human odor is a crucial element in forensic investigations.
• The survivability of human scent after explosive events is critical for evidence recovery.

Purpose of the Study:

• To evaluate the effectiveness of human scent-specific canine teams in detecting individuals linked to improvised explosive devices (IEDs).
• To document the persistence of human odor on post-blast materials.

Main Methods:

• Collection of human odor from post-blast components of improvised explosive devices (IEDs) and delivery vehicles.
• Deployment of human scent-specific canine teams in controlled, double-blind field trials at blast scenes and remote locations.
• Validation of canine detection and identification capabilities based on residual human scent.

Main Results:

• Human scent-specific canines successfully identified individuals with an average success rate of 82.2% from post-blast debris.
• Human odor was found to remain in sufficient quantities for reliable canine detection and identification after peroxide-based explosions and simulated roadside IEDs.

Conclusions:

• Human scent-specific canine teams are a viable tool for identifying individuals who have had contact with IED components or vehicles.
• This technology holds significant potential for criminal investigations, military operations, and forensic applications.