Bloodstain pattern analysis
Bloodstain pattern analysis is used to assist in determining the direction and speed of blood drop(s) at the scene of a crime. The analysis of blood spatter can corroborate the use of other physical evidence and can indicate important information such as the type and velocity of the weapon used, the number of blows to cause such splatter, the position of the assailant and victim, which wounds were inflicted first, and type of injuries. Whether it is high-velocity blood spatter from a gunshot wound or low-velocity from a person dripping blood on the ground, our crime scene reconstruction team can assist in making that determination through careful review of all the reports, notes & photographs, as well as examination of the evidence.
Bullet trajectory analysis
Bullet trajectory techniques can be used to compliment bloodstain pattern analysis during crime scene reconstruction. By tracing the path or the trajectory of the bullet, one can determine the position of the victim’s body at the time of a shooting or can determine the angle of impact. Bullet trajectory analysis can also assist in determining the position of the shooter and the distance from a target. By stringing trajectories, for example, our scientists can trace the path or trajectory of a bullet in an effort to locate the origin of the gunshot.
Firing distance determination
When fired, firearms discharge not only the projectile, but residues associated with the discharge of the cartridge. Depending on the type of firearm and ammunition this projectile and residues may consist of shot pellets, wadding, shot cups, partially burned and unburned powder particles, smoke, and elements or compounds associated with gunpowder combustion. Our scientists can approximate the distance from the muzzle to the target by careful examination of gunshot features on the target and comparing them to similar features on test fired targets.