Toby Terpstra is a Senior 3D Analyst at J.S. Held and has testified in state and federal courts on civil and criminal matters. He has authored more than 20 peer-reviewed publications with the Society of Automotive Engineers (SAE), the Acoustical Society of America (ASA), the American Academy of Forensic Sciences (AAFS), and the Association for Crime Scene Reconstruction (ACSR). Mr. Terpstra also serves as a peer reviewer for SAE, ACSR, and the Association of Firearm and Tool Mark Examiners (AFTE). He is a certified Forensic Video Technician through LEVA and is recognized as a Master Instructor by SAE for teaching an ACTAR accredited, three-day course titled: “Photogrammetry and Digital Media Analysis”. He is also currently working to develop standards and guidance documents with the Organization of Scientific Area Committees for Forensic Science (OSAC) in both the Video/Imaging Technology and Analysis (VITAL) and Crime Scene Investigation and Reconstruction (CSIR) subcommittees.