Forensic Science

Qualifications - Members must possess either a BS/BA, MS/MA, PhD in a physical science and/or social science whose education, training, and experience is centered on forensic science, such as but not limited to serology, ballistics, reconstruction, computer science,impression/fingerprints, documents, arson, entomology, archaeology (i.e., buried body recovery), etc. with supporting con-ed courses in specialized area(s),published research and/or physically-scientific expert witness testimony regarding crime scene investigation, physical evidence, and/or crime scene reconstruction.

Traci Brasse, MA, Chair

Working in forensics since 1993, Traci has worked both in forensic laboratory quality assurance management for crime laboratories as well as in the investigative field for special investigations of high profile cases involving exhumation. Traci worked as a forensic quality manager for a private DNA laboratory and then as a consultant for crime laboratories specializing in accreditation preparation, auditing, process improvement, project management for both Department of Justice (DOJ) and Department of Defense (DOD) federal law enforcement forensic laboratories to include the Alcohol, Tobacco, Firearms, and Explosives (ATF), Fire Research Laboratory (FRL) at ATF,  United States Army Criminal Identification Laboratory (USACIL); and the United States Postal Inspection Services (USPIS).  Working internationally, Traci consulted for the Guatemalan Forensic Anthropology Foundation (FAFG) DNA laboratory and was a member of their Scientific Working Group Board (SWGB).  Prior to her work in quality management and lab consulting, Traci worked in an investigative capacity as part of an independent exhumation team member of forensic experts for 10 years.    Her education includes an undergraduate degree in Biology from Mary Washington College, Fredericksburg, VA and a Master of Arts in Criminal Justice with a concentration in Investigative Forensics from DeSales University, Center Valley, PA. She is a member of the American Academy of Forensic Scientists (AAFS). Traci is an adjunct instructor at DeSales University in the Master of Arts Criminal Justice Program.


Mike Cariola, MFS - CEO of Bode Technology. Mike leads Bode Technology, the industry leader in providing services and products to the forensic community. Bode provides a comprehensive set of state-of-the-art forensic DNA collection products, analysis services, and research services to law enforcement, justice system, and other government agencies around the world. Operating one of the most internationally respected private DNA laboratories, Bode's forensic DNA experts have assisted in identifying criminals in every state in the United States, and played a key role in the exoneration of numerous individuals. Bode provides immigration and paternity testing worldwide. Bode has also been instrumental in the identification of victims of natural disasters, war, crime, and terrorism, including the attack on the World Trade Center. In addition, Mike possesses a Master's Degree in forensic molecular biology.

Dr. Kenneth Cohrn, DDS, MAGD, DABFO - Dr. Cohrn graduated SUNYAB Dental School and completed a GPR at the VA Medical Center in Buffalo, NY. He currently resides in Central Florida and is in private practice. In addition, Dr. Cohrn is a consulting adjunct professor with the Department of Pathology, Immunology and Laboratory Sciences, School of Medicine, CA Pound Human Identification Lab and Maples Center at the University of Florida. Dr. Cohrn is a Diplomate of the American Board of Forensic Odontology and a Fellow of American Academy of Forensic Sciences. Dr. Cohrn serves on the Board of the ABFO, a member of the ASFO, FSCIA, FLIAI and the FDLE Child Abduction Response Team (CART). He is an expert in animal bitemarks and Past President of IVFSA. He is the Odontology Section Morgue Supervisor of FEMORS, member of DMORT Region 4, the Chief Odontology Consultant for five Florida Medical Examiner Districts along with various law enforcement and legal agencies. Dr. Cohrn is a contributing author to the 5th Edition of the Manual of Forensic Odontology, Journal of the California Dental Association and has lectured extensively on forensic odontology.

Cassandra Fleksher - 

John Frucci - John J. Frucci III is currently employed at Oklahoma State University in the School of Forensic Sciences. He has been with OSU for 3 years and is the Program Director of the Arson and Explosive Investigation graduate program.  He is also the Director of the Center of Improvised Explosives. Frucci began his law enforcement career in 1992 as a Sheriff's Officer with the Essex County Sheriff's Office in Newark, N.J.  He was initially assigned to the uniform division, and then promoted to Detective in 94 assigned to the fugitive squad. In 96 he was transferred to the Essex County Arson Task Force as a Fire and Post-Blast Investigator. In 02 he was transferred to the Bomb Squad as a Bomb Technician, where he completed his career as the Bomb Squad Commander. During his 20+year career he led many types of investigations, the most notable of which was as lead investigator for a seven-year investigation of the Seton Hall fire in 2000 that killed three and injured 58. Two suspects pleaded guilty on the first day of the trial and the investigation resulted in International Association of Arson Investigators an International Investigator of the Year Award for Frucci. Frucci earned his bachelor's degree in political science from Rutgers University in 1997. He earned his master's degree in education administration in 2000 and his education specialist degree in education administration and supervision in 2006, both from Seton Hall University. He will complete his Doctorate from OSU this summer.

Lesley Hammer, MA, MS - Lesley Hammer is a Forensic Examiner from Anchorage Alaska, currently in private practice, with experience in forensic casework, laboratory supervision and scientific instruction.  She has performed analyses, reported and testified in latent print, footwear and tire track, crime scene and controlled substance disciplines.  She holds professional certifications in Forensic Footwear Examination with the IAI and the CIS and in Criminalistics from the American Board of Criminalists.  Ms Hammer has supervised a Forensic Physical Unit in an accredited laboratory, published articles, performed research and provides forensic evidence related instruction to law enforcement, crime laboratory personnel and others throughout the United States and in Canada.  She holds a BA in Environmental Science from Alaska Pacific University, an MA in Teaching from the University of Alaska, and an MSc in Forensics from the University of Strathclyde in Glasgow, Scotland.  She is past Chair of the Scientific Working Group on Shoe and Tire Tread Evidence (SWGTREAD), a current Affiliate Member of the Organization of Scientific Area Committees Footwear and Tire Track Subcommittee, and is a past President of the International Association for Identification.  

William Moore, BA - Mr. Moore has expertise as a Firearms Examiner/Crime Scene Investigator/Narcotics Analyst/Forensic Toxicologist/Forensic Serologist/Sexual Assault Evidence. Mr. Moore worked as a Criminalist for 30 years at the Los Angeles Police Department.

Tracy Oost, H.B.A., H.B.Sc. – Tracy is trained as a Forensic Osteologist and Forensic Entomologist, working for Laurentian University in Sudbury, Ontario.  Laurentian currently offers the only FEPAC accredited Forensic Programs in Canada.  She is a forensic educator, and practitioner, consulting for various police agencies and the Coroner’s office since 1998, and providing expert witness testimony.  She specializes in remote scene recovery and documentation of human remains, osteological analysis, and entomological analysis.  Her current research involves development of entomological standards for determining postmortem interval in Northern Ontario.  Tracy has also taught police officers through the Toronto Police Services Annual Forensic Identification Conference, and at the Canadian Police College and Ontario Police College, on the topics of forensic recovery of human remains, and forensic entomology.  She designed and implemented the fourth year capstone course, Investigative Techniques for Forensic Scientists, for the forensic program at Laurentian University.  This course requires students to process a mock crime scene, analyze the evidence, and present the case in a real court room.  Tracy has been involved in historical forensics as a Titanic researcher, involved in the identification of remains interred after the disaster in Halifax, as well as identity claims made by the living.  She was also instrumental in assisting a colleague in re-establishing a police case file regarding the disappearance of her sister in 1966.  Tracy has been featured in two Discovery Channel productions:  The Science of Death, and Titanic:  The Aftermath.  Tracy holds memberships in the Canadian Society of Forensic Science, The Canadian Identification Society, and the Entomological Society of Ontario.

Dave Pauly, MFS - Retired Special Agent-in-Charge /Commander and Forensic Science Officer from U.S. Army Criminal Investigation Command. Holds Master of Forensic Science and current Director of Applied Science at Methodist University, Fayetteville, NC. Graduated from FBI National Academy (Session 195), Canadian Police College Major Crimes Course, Miami-Dade Police Dept. Bloodstain Interpretation Course, and National Fire Academy Arson Investigation Course. Member or affiliate of the following organizations: American Academy of Forensic Science, IAI, North Carolina Chapters of the IAI and FBINAA, IABPA, ASIS, EPIC, and Vidocq Society.

Dr. Mark Perlin, PhD, MD, PhD - Dr. Mark Perlin is the founder of Cybergenetics and the creator of the TrueAllele® technology. He has worked in research in many areas of medicine, science and technology. His early work was in MRI technology research, genomics and cancer before moving to forensics. Dr. Perlin has always focused his research and innovative technology on automation and parallel processing efficiency. He mapped the first high resolution YAC contig map of Chromosome 11 in 1995 using his unique automated Inner Product Mapping technology, and has been the first to create a fully automated people-free technology for interpreting and analyzing complex mixture DNA. Dr. Perlin regularly gives presentations and is the author of about fifty scientific papers. He holds 10 patents in fields ranging from DNA mixtures to genome mapping. Before moving to Cybergenetics, Dr. Perlin was a senior research faculty member for ten years in the School of Computer Science at Carnegie Mellon University in Pittsburgh, PA.

Dr. Richard Scanlon D.M.D. - Dr. Scanlon is a Regional Forensic Odontologist for NamUs (National Missing and Unidentified Persons System) who is responsible for providing forensic odontology services to law enforcement agencies, coroners and medical examiners for 26 states and territories. Dr Scanlon previously held the same position as a regional forensic odontologist with NamUs at its inception in 2010. Dr Scanlon has a B.S. degree in Biology from the University of Pittsburgh in 1970 and a D.M.D. degree from the University of Pittsburgh School of Dental Medicine in 1974. He then served as a Captain in the U.S. Army Dental Corps, assigned as a Division Dental Surgeon for the 9th Division at Ft. Lewis Washington. During that duty he was trained and performed forensic odontology services for the military and local agencies. He returned to Pennsylvania in 1977 and began a private practice in family dentistry and forensic odontology and still practices part time as a family dentist in Lewistown, PA. He was an active staff member and served as President of the Medical Staff at Lewistown hospital and was the Chief Deputy Coroner of Mifflin County for 9 years and Acting Coroner for 2 years. He is a member of DMORT and served as a Deputy Commander of Region III DMORT. He is also co-director of PADIT (PA Dental Identification Team). He is a member of the PA Attorney Generals Medical – Legal Advisory Board on Child Abuse since 1989, a Fellow of the American Academy of Forensic Sciences, the International College of Dentists and a member of the Possible Match Panel of the Doe Network and the NDIR Review Panel for the FBI.

George Schiro, MS - George Schiro has over 25 years of experience as a forensic scientist and crime scene investigator. He has examined evidence in over 3200 criminal and civil cases. While most of these cases have been in Louisiana, he has also consulted on cases in 23 other states, for the United States Army and Air Force, and the United Kingdom. He has also testified as an expert witness in over 160 trials in 30 Louisiana parish courts, Pope County Arkansas, San Bernardino County California, Escambia and Lee Counties Florida, Washington County Mississippi, St. Louis County Missouri, Clark County Nevada, Bronx County New York, Harris County Texas, Cabell County West Virginia, federal court (Louisiana Middle and Nebraska districts), and two Louisiana city courts. Specialties: Crime Scene Investigation , Crime Scene Reconstruction, General Forensic Science, DNA Analysis, Serology, Bloodstain Pattern Analysis, Shooting Reconstruction, Shoeprint Identification, Hair Examination, Latent Print Development, Fracture Match Analysis.

John Thacik, MS - Cpl. Thacik has been employed by the Pennsylvania State Police since 2007. As a member of the Patrol Unit at Troop H- Lykens, Cpl. Thacik was selected to attend and successfully completed the Drug Recognition Expert School making him one of only 75 Troopers at the time to hold this designation. Also as a member of the Patrol Unit, he received specialized training in fingerprinting and photography and crime scene investigations.  In 2011 Thacik was selected for a position as a Forensic Firearm and Toolmark Examiner at the Greensburg Regional Laboratory within the Pennsylvania State Police Bureau of Forensic Services, whereupon he underwent an extensive two year training program. He has received training from the Bureau of Alcohol, Tobacco, and Firearms, numerous firearm and ammunition companies, as well as experts in the field of Shooting Incident Reconstruction. His work has been published in the Association of Firearm and Toolmark Examiners Journal. Cpl. Thacik’s primary duties include the examination of firearms and firearm components to include discharged bullets, cartridge cases, and shotshells, muzzle to garment distance determinations, toolmark examinations and identifications, and serial number restorations. Cpl. Thacik received a Master of Science Degree in Biochemistry from the University of Saint Joseph, a Bachelor of Arts Degree in Biology from The Ohio State University, and a Certificate in Forensic Science and Law from Duquesne University.

Todd A. Thorne, BS - Todd A. Thorne is currently working in both the law enforcement and private communities. Todd is well versed in Bloodstain Pattern analysis, Forensic Photography, Evidence Processing Techniques as well as Crime Scene Reconstruction. He is also a Latent Fingerprint Examiner. Todd has a variety of published articles and photographs in these disciplines. Todd has been working in the field of criminalistics for over 25 years and continually offers expert testimony/consultation. He is a certified State of Wisconsin and Illinois Instructor and has served on staff with the Nebraska Institute of Forensic Science. Todd is a sought after speaker and is an adjunct instructor in the area of Forensic Science for several colleges. In addition, he has served on Wisconsin's Domestic Violence/Sexual Assault Evidence Training Team.Todd has been a member of the Federal Government's U.S. Department of Homeland Security, serving with the DMORT V Disaster Response Unit. He operates Todd A. Thorne & Associates Forensic Consultants and Photography Services, LLC, which has exposed him to both national and international cases. Todd instructs throughout the country for The Lynn Peavey Company and has been called upon for technical consultation/research by various entities.
Todd is currently the Immediate Past President of the International Association of Bloodstain Pattern Analysts and has served the Wisconsin Association for Identification as President, Chairman of the Board and has chaired numerous committees, The International Association of Bloodstain Pattern Analysis as Region 3 Vice President, Associate Editor and The Kenosha Professional Police Association as the secretary. Todd's hobbies include family activities, church activities, camping and photography. He is married with 5 children.

Captain John P. Slater (Ret.)- Former Law Enforcement Criminal Investigation Division Commander, supervising numerous detectives in multiple divisions throughout his agency before retiring in 2006 due to line of duty injuries. During his career, Captain Slater developed a profound ability to conduct successful interviews and obtain confessions in some of the most heinous crimes ever committed; thrusting him into the spotlight among his law enforcement peers and in constant demand to assist in multiple jurisdictional needs of his talent. In 2007, the U.S. Department of Defense and Naval Special Warfare requested his assistance in training Special Forces Groups within our U.S. Military in the disciplines of Interview & Interrogation as well as Voice Analysis. While conducting training stateside with U.S. Army Special Forces Groups and West Coast Seal Teams, it became a standard request for Captain Slater to deploy with the groups to work down range in the Iraq Theater.  In January of 2008 during the surge of Iraq, Captain Slater was requested to deploy with NSW Seal Team One to Fallujah Iraq and provide training and subject matter expertise during Operation Iraqi Freedom. His training tactics and expertise gave U.S. Special Forces groups new avenues in developing intelligence and confirming information before missions were conducted, saving numerous lives of U.S. military and coalition forces and assisted in locating High Valued Targets by utilizing a newly developed reverse analysis technique. After returning to the states, Captain Slater then brought these techniques to the Law Enforcement sector primarily for Cold Cases involving missing persons and unsolved murders. Since then he has worked on numerous high profile cases, identifying crucial information, determining locations and even a times of death by conducting Forensic Voice Analysis on pre-recorded interviews with new cases and cases as old as 25 years. His most notable Forensic Analysis was that of Drew Peterson involving the murder of his 3rd wife; Kathleen Savio. Captain Slater was able to identify that Ms. Savio was actually murdered while the main focus was on Stacy Peterson, the missing 4th wife. Peterson was later convicted of the murder of Savio when her death was originally ruled an accident. The Reverse Analysis Technique that he has shared with a select few Law Enforcement groups can help determine exact locations of missing persons down to a quarter of a mile. He has made Forensic Analysis conclusions for times of death within 30 minutes and confirmed by pathologists at a later time on cases as old as 10 years, all through previously recorded interviews. Captain Slater currently works Cold Cases at a Global level involving Missing Persons, Mass Murders, Crimes against Humanity and Genocide, working closely with the International War Crime Tribunals and the International Criminal Courts in Hague.  He has served in numerous executive positions with Law Enforcement organizations around the Globe and holds over 7450 Specialized Law Enforcement training hours.