Marie Durina is a Forensic Document Examiner with the firm of Riley Welch & LaPorte Forensic Laboratories. Ms. Durina has over 26 years of experience in forensic science. She retired in 2015 from the San Diego County Sheriff’s Regional Crime Laboratory, where she served as the Senior Forensic Document Examiner, with oversight of the Forensic Document Examination services for the County of San Diego, CA. Marie graduated magna cum laude from Baruch College, CUNY, of New York, NY, with a Bachelor’s degree in Business Administration. She also holds a Graduate Certificate of Academic Studies in the Examination of Questioned Documents from Oklahoma State University, and a Certificate of Achievement in Administration of Justice/Criminal Investigations from Miramar College in San Diego, CA. Her 3-year training program included training by the Federal Bureau of Investigation, the U.S. Secret Service, and the Rochester Institute of Technology (RIT). Ms. Durina is a member of a number of professional organizations, including the American Society of Questioned Document Examiners (ASQDE), the American Academy of Forensic Science (AAFS) Questioned Document Section, and is a committee member of the Scientific Working Group for Forensic Document Examination (SWGDOC). In 2008, Ms. Durina received certification as a Diplomate of the American Board of Forensic Document Examiners (ABFDE) which is the only certifying body sponsored by the Canadian Society of Forensic Science, the American Society of Questioned Document Examiners, the Southwestern Association of Forensic Document Examiners, and the Southeastern Association of Forensic Document Examiners. The ABFDE is also recognized by the American Academy of Forensic Sciences, the International Association for Identification, the Midwestern Association of Forensic Scientists, and the Mid-Atlantic Association of Forensic Scientists. The ABFDE is the only certifying body that can claim such sponsorship and recognition. Ms. Durina has conducted research and has given presentations on several forensic document topics and she has published several papers in forensic science journals. She was author of the chapter on Questioned Documents in the textbook “Practical Cold Case Homicides – Practical Investigative Techniques” by R. H. Walton, published in 2016. Ms. Durina has provided training classes to numerous law enforcement agencies and legal groups, has served as an Adjunct Professor at Miramar College in San Diego, CA, and has been a frequent guest lecturer at Evidence Technology classes at Grossmont College, in El Cajon, CA.