Ballistics Expert, Forensic

Examines and tests firearms, spent bullets, and related evidence in criminal cases to develop facts useful in apprehension and prosecution of suspects: Examines bullets, bullet fragments, cartridge clips, firearms, and related evidence found at scene of crime or in possession of suspect to identify make and caliber of weapon. Test-fires weapons allegedly used to facilitate microscopic comparison of bullets from test weapon with those discovered at scene of crime. Determines, from knowledge of ballistics theory and standard test procedures, probable angle and distance from which crime weapon was fired, revealing origin of shot. Prepares reports of findings and testifies at inquests, trials, and other hearings to facilitate prosecution or exoneration of suspects on basis of determinations. May perform standardized tests on other articles of evidence, using chemical agents, physical-testing equipment, measuring instruments, and prescribed procedure, to determine relationship of evidence to suspect and to crime. May order and maintain departmental weapons and related equipment. May be designated by rank as Lieutenant, Ballistics (government ser.).