Erwin Arnaud is a Scene Specialist Supervisor with the Tucson Police Department in Tucson, Arizona. Ed began his forensic career with the Pima County Sheriff’s Department as an Identification Technician from 1994 to 1996. 

In 1996, Ed joined the Tucson Police Department as an Identification Technician (Crime Scene Specialist). In 2010, Ed  took a one-year break in service to work for the Department of Defense, assigned to an Army-managed forensic lab in Baghdad, Iraq. During this assignment, Ed processed forensic evidence and trained Iraqi counterparts. Ed returned to the Tucson Police Department in 2011 as a Crime Scene Specialist and was promoted to supervisor in 2014. Ed became an IAI Certified Crime Scene Analyst in 1996, a certification he continues to hold. In 2014, Ed was a presenter at the Tri-Division Conference (AIC), where he delivered a two-hour course on UVIR.

Jason Cole is a Senior Technical Sales Specialist for Foster + Freeman. Jason because his career as a police officer in Utah working for Sandy City Police, where he worked his way up to Detectives investigating juvenile crime and domestic violence. Jason’s forensic training began with Sandy PD and led him to a Forensic Investigator job at West Valley PD (UT), where he not only responded to crime, but also developed the latent prints collected and examined them. In 2007, Jason was promoted to Forensic Director of the West Valley City PD Forensic Unit. In 2010, Jason moved to Las Vegas where he accepted a position as Latent Print and Footwear Examiner with the Henderson Police Department. Jason’s volunteer service includes the BOD for the Utah Division of the IAI and Nevada, he served as president for both organizations. Jason works part-time as a LPE for Loudoun County Sheriff’s Office. Jason serves on the BOD for the IAI.

Peter DeKraker is a Detective and Lead Crime Scene Investigator with the Forensic Services Unit at Fort Collins Police Services in Fort Collins, Colorado. He has 13 years of law enforcement experience, including 10 years in crime scene investigation, with extensive involvement in processing and coordinating complex crime scenes. DeKraker is an IAI Certified Senior Crime Scene Analyst and serves as a Colorado POST Academy instructor, where he teaches crime scene investigation and other law enforcement topics. He is also a Lead Firearms Instructor for Fort Collins Police Services and an experienced UAS pilot. His instructional experience includes crime scene investigation, forensic photography, firearms, and other law enforcement topics. He has previously presented at the IAI International Educational Conference.

Sandra Grogan graduated Weber State University in 2002 with her BS degree in Criminalistics, Criminal Law, and Law Enforcement. And later in 2004 with her master’s degree. She began working as a Crime Scene Technician at the Long Beach Police Department.  She remained there for a year until accepting a position with the Weber Metro CSI Unit in May of 2005.  She was promoted to the director of the Weber Metro CSI Unit in 2009 where she continues to hone her own skills as well as an entire unit of skilled professionals.  Sandra has testified 26 times as an expert in court, about half to shooting crime scenes and shooting reconstructions.   She has 1400+ training hours dealing with crime scene processing, latent comparisons, and crime scene management.

Dr. Heather Hatfield-Schlenker, DFS, M.S., CSCSA, CBPA, is a forensic science professional and educator with more than 15 years of experience in crime scene investigation and forensic analysis. She previously served as a Crime Scene Investigator with the Corpus Christi Police Department and as a Senior Criminalist with the Thornton Police Department in Colorado. She currently teaches Crime Scene Investigation at FutureForward–Washington Square and serves as an Adjunct Criminal Justice Instructor with the Community College of Aurora. Dr. Hatfield-Schlenker is also a national instructor for LSU’s National Center for Biomedical Research and Training. She has been qualified as an expert witness in crime scene investigation and analysis, fingerprint and palm print examination and comparison, and bloodstain pattern analysis and interpretation. She is an IAI Certified Senior Crime Scene Analyst and Certified Bloodstain Pattern Analyst and currently serves as an RMDIAI Regional Representative and Past President.

Dr. Roberto King is Head of Research, Development and Operations at West Technology and Visiting Professor of Forensic Science at the University of South Wales. Previously, he led innovation at foster+freeman as Vice President of Product and Chief Technology Officer.

He earned a first-class honours degree in Chemistry and Sports Science and a Ph.D. in Chemistry from Loughborough University. An inorganic chemist and forensic science innovator, his work includes fingerprint-enhancement agents, evidence recovery from questioned documents, body fluids, trace evidence, and contact transfer.

Roberto has delivered more than 200 lectures worldwide, including keynote and plenary presentations, and published over 30 research papers and three book chapters. He has appeared on television and news broadcasts. In 2024, he co-edited Driving Forensic Innovation in the 21st Century: Crossing the Valley of Death. He serves on two advisory boards, has led Ph.D. and KTP research partnerships as Principal Investigator, and holds numerous patents.

Jessica Liang is the owner and lead instructor of Finer Points Forensics. She is an IAI certified Senior Crime Scene Analyst, forensic specialist, educator, and content creator dedicated to training the next generation of forensic professionals. 

Jessica holds a masters in Forensic Science. She started her career in 2011 with LASD as a 911 dispatcher before promoting to forensic specialist. In 2022, she transferred to LAPD. Jessica has conducted over 1,000 crime scene investigations ranging from burglaries to death and OIS. 

Along the way, Jessica discovered her passion for teaching and training which is why in 2023 she launched Finer Points Forensics. Jessica believes in providing practical, fun, and experience-based training. She is committed to passing down her strong commitment to serving with competence, integrity and confidence to the up-and-coming generation of forensic professionals.

Nicole Osborn (CLPE) with twenty years of working for the Los Angeles Police Department as a Forensic Print Specialist, played a pivotal part in developing the Latent Print Unit’s training and testing materials.

Nicole has trained over 40 individuals to competency in latent print comparisons and is currently using this experience and knowledge to develop external training programs to help other agencies. Nicole is an active member within the latent print discipline and forensic communities who facilitates a CLPE study group and who is also currently serving on the California State Division IAI Executive Committee.

Ramon Rivera is a forensic professional with over three decades of service in forensic investigation and law enforcement. He retired in 2023 as the Supervising Forensic Investigator for the Elk Grove Police Department, where he supervised the Forensic Unit, directed crime scene assignments, and trained personnel. Before joining Elk Grove, Ramon held positions with the California Department of Justice, developing and enhancing latent prints, conducting forensic examinations, assisting with major crime scene investigations, and providing expert testimony. He has testified in California superior courts, federal court, grand jury proceedings, and military justice hearings. Ramon studied General Studies at California State University, Sacramento, and Criminal Justice at Sacramento City College. He has completed training in latent prints, crime scene investigation, forensic photography, and courtroom presentation. A life member and past president of CSDIAI, Ramon mentors, teaches, and inspires forensic professionals. He serves as Lead Instructor and International Liaison for Forensics 360®.

Jessica Romero is a Crime Scene Specialist (CSS) Supervisor and a forensic artist with the Tucson Police Department (TPD) Identification Section. She has more than eleven years of crime scene fieldwork experience.

 In 2022, she began assisting with training new CSS hires as an academy instructor and field trainer. She has also trained TPD volunteers on how to properly collect a tenprint fingerprint card for public fingerprinting services. Jessica enjoys teaching and has presented at Pima JTED, local schools, job fairs, International Association for Identification (IAI) conferences, and the Arizona Identification Council (AIC) conference. She holds a master’s in communication from Northern Arizona University, where she created an interpersonal communication workshop for the TPD Crime Scene Unit Academy.

Taoan de Souza Santana is a Brazilian court-appointed forensic expert and founder of Mundo Forense. He holds a degree in Forensic Investigation and Criminal Expertise and a postgraduate qualification in Computer Forensics. Taoan's professional practice includes questioned-document examination, handwriting examination, digital document analysis, fingerprint examination, criminalistics, and digital evidence. 

Taoan is a member of the Forensic Expertise Commission of the Brazilian Bar Association, Niterói/Rio de Janeiro chapter. Santana is also the author of the published scientific chapter “Modelo Ilhéus: Estrutura Técnico-Científica Municipal para Apoio à Segurança Pública Brasileira” and the creator and producer of Íntegro, a technology project focused on strengthening the integrity, provenance, and traceability of digital documents and evidence. His work connects forensic science, technology, education, and public institutions.

Walt Stelz is the CEO and Co-Founder of Biometrics Consulting Partners LLC. He has more than 25 years of information technology experience, including more than 15 years focused on biometrics and identity management. Walt has led more than 100 biometric design and project teams supporting public-safety and civil-identity programs at the national, state, and local levels. His experience includes AFIS/ABIS, livescan, Mobile ID, facial recognition, iris, multimodal systems, IT infrastructure, algorithms and databases, data migration, procurement, implementation, and long-term support. Having held leadership roles with Thales, Gemalto, 3M, and Cogent, Walt brings both technology-provider and agency perspectives to biometric strategy and operations. He currently provides vendor-neutral guidance to agencies on requirements, procurement, technology evaluation, contracting, modernization, implementation risk, system performance, and vendor support 

Jessica Swenson is a Crime Scene Technician II with Weber Metro CSI, where she has served for seven years investigating scenes ranging from property crimes to homicides. For the past five years, she has developed an area of expertise in full-spectrum forensic photography through specialized training, mentorship, independent study, and extensive practical application. She has utilized ultraviolet, infrared, and other alternate light source photography techniques in both laboratory and field settings on cases involving fraud, aggravated assaults, shootings, homicides, and adult and pediatric death investigations. Jessica has also testified in court regarding the use of infrared photography to document gunshot residue and has developed training resources and provided instruction to fellow crime scene investigators. She holds both a Bachelor of Science in Criminal Justice with an emphasis in Crime Scene Investigation and a Master of Criminal Justice from Weber State University, where she also served as an adjunct professor.

Kevin Toth is a seasoned law enforcement leader with extensive experience directing highrisk tactical operations and managing critical departmental functions. As a Police Captain, he oversaw specialized units, led SWAT missions, coordinated crisis response, and ensured officer readiness—work that reflects his commitment to disciplined, highquality leadership. As a Fellow with the International Association of Chiefs of Police – Community Trust Initiative, Kevin strengthened collaboration between the department and the community, providing strategic guidance to the Chief of Police and Executive City Management. He represented the department in public forums, managed sensitive investigations, and advanced initiatives that improved operational efficiency and public trust.

Kevin also cofounded MD53 Strategies, Inc., a consulting collective delivering premium, programmatic solutions for executive teams navigating complexity, growth, and reputational risk. Through organizational analysis, cultural alignment, risk planning, change implementation, and executive advisory, he helps leaders operate with clarity, efficiency, and confidence.

Nikki Wagar is a latent print examiner and a crime scene analyst who specializes in bloodstain pattern analysis and crime scene reconstruction. 

Nikki is a Certified Latent Print Examiner and Certified Crime Scene Analyst through the International Association for Identification (IAI) and has been working in both specialties for over 17 years. Nikki has a master's degree in forensic science and a bachelor's degree in Physical Anthropology. 

Nikki began her career with the California Department of Justice, Bureau of Forensic Services and continued applying her expertise in forensic science as a Forensic Analyst with the Washington County Sheriff's Office in Oregon prior to transitioning to forensic consulting. Nikki founded Ridgeline Forensics in 2019, working cases nationally since. Locally, she is honored to be a past president of the Pacific Northwest Division of the IAI.

Dr. Lauren Weidner is Associate Professor of Forensic Entomology and director of the Forensic Entomology & Wildlife Laboratory (FEWL) in the School of Interdisciplinary Forensics. She earned a bachelor’s degree in forensic science, specializing in molecular biology, from John Jay College of Criminal Justice in 2010 and a Ph.D. in Entomology from Rutgers University in 2016. She is past president of the North American Forensic Entomology Association and one of 23 Diplomates of the American Board of Forensic Entomology.

FEWL advances knowledge of insects as forensic bioindicators through research and educational outreach. Its research includes carrion-colonizing insect ecology and behavior, blow fly communities, insect trafficking, archaeological applications, and biodiversity in sensitive regions, including Organ Pipe Cactus National Monument, Petrified Forest National Park, and Sweden’s Abisko Scientific Research Station. Dr. Weidner’s work has appeared in forensic science and entomology journals, and she has presented at local, regional, national, and international conferences.

Melissa Whipple, CCSA, is a 20+ year certified police officer, with 15+ years in crime scene related work.  She currently works as the Evidence & ID Supervisor at the Bellingham Police Department, and assists with the CSI and Digital Forensics programs. Melissa has extensive experience working through real life shooting incidents and developing reconstructive simulations/demonstrations.

Douglas A. Young is a forensic professional with more than 30 years of experience in law enforcement, crime scene investigation, and forensic reconstruction. He currently serves as a Senior Criminalist with the Thornton Police Department and as a Training Specialist and Triage Team Member with the Cold Case Foundation. Douglas is the founder of Triad Forensics, providing consulting, case analysis, reconstruction, expert testimony, and specialized forensic training. He is a Certified Forensic Entomology Technician and Certified Force Science Analyst and has extensive experience in crime scene reconstruction, bloodstain pattern analysis, shooting incident reconstruction, latent print examination, and forensic entomology. Douglas is a Life Member of the International Association for Identification and has held numerous forensic leadership positions, including President of the Association for Crime Scene Reconstruction and President of the Rocky Mountain Division of the IAI.