Joseph Blozis is a retired NYPD Detective Sergeant who served for 28 years, 22 of which he was assigned to the Forensic Investigations Division- Crime Scene Unit. Sergeant Blozis supervised over 2,500 crime scenes and coordinated unit training, including DNA collection. As coordinator for the NYPD’s Biotracks DNA program, he utilized his crime scene expertise to train field personnel in the recognition, detection, documentation, and recovery of DNA evidence at crime scenes.