This highly experienced criminalistics and firearms identification expert brings more than 47 years of specialized expertise in forensic firearms and toolmark examination, crime scene analysis, and reconstruction of violent and accidental events, and has been accepted as an expert witness more than 500 times in federal, state, military, and local courts for both prosecution and defense matters. He retired as a chief criminalist after more than 30 years with a regional public crime laboratory and also served as a Chief Warrant Officer (CW-4) and Special Agent with a U.S. military criminal investigation laboratory in the United States and Europe. He holds Bachelor and Master of Science degrees in Administration of Justice. His expertise includes firearm and toolmark examination and comparison; gunpowder and distance determination; bullet trajectory and range reconstruction; evaluation of bullet-resistant materials; knife and wound examinations; wound and tissue interpretation; crime scene and accident reconstruction; fracture analysis; holster and security device examinations; tire and footwear impression comparison; bomb and arson debris analysis; air gun and paintball examinations; use of ballistic imaging systems; and capital case and post-conviction reviews. He previously served as president of a national professional association for firearm and toolmark examiners.