(877) 221-5300
7705 Ann Ballard Road
Tampa, FL 33634


In 1963, R. Scott Grybek founded Interscience Research and Engineering to provide consulting services to a variety of clients in materials failure, chemical specialties formulation and testing, institutional and food plant sanitation, and insurance loss investigation. In 1972, the company was reorganized as "Interscience" with an emphasis on loss investigation and failure analysis. In 1990, Interscience became an employee-owned company.

Interscience personnel are experienced in field investigations and in litigation where our abilities are well known. We have been involved in thousands of projects throughout the United States and in many foreign countries.

Officers and associates of Interscience are members of organizations related to the field of forensic science and engineering. Long-term professional society memberships have helped key personnel remain current with the rapid changes taking place in science and technology.

Professional Associations:

• International Building Code Congress (IBCC)
• Florida Advisory Committee on Arson Prevention (FACAP)
• National Association of Subrogation Professionals (NASP)
• Florida Associations of Licensed Investigators (FALI)
• International Association of Arson Investigators (IAAI)
• American Society of Mechanical Engineers (ASME)
• American Society of Testing and Materials (ASTM)
• National Association of Fire Investigators (NAFI)
• American Institute of Chemical Engineers (AIChE)
• American Society of Safety Engineers (ASSE)
• International Association for Fire Safety Science
• National Fire Protection Association (NFPA)
• American Boat and Yacht Council (ABYC)
• American Society of Microbiology (ASM)
• Property Loss Research Bureau (PLRB)
• Society of Automotive Engineers (SAE)
• American Indoor Air Council (AIAQC)
• American Chemical Society (ACS)
• The Combustion Institute
• National Forensic Center

Our Staff

Gene Bullington, B.S., CFC, CFEI
Chairman of the Board

Navy experience as Fire Control Technician. Graduated from the University of South Florida with a Bachelor's Degree in Criminal Justice. Lectured at the University of South Florida, St. Petersburg Junior College, Hillsborough Community College, Pinellas Police Academy, and numerous association seminars and conferences on fire origin and cause, accident reconstruction and electrical failure analysis. Past President of PARCO Arson Co-Op of Florida and Florida Chapter of the International Association of Arson Investigators. Court qualified in State and Federal courts in fire origin and cause and electrical failure analysis. He has performed extensive research into appliance failures. Gene is a Certified Fire and Explosion Investigator, as well as a Certified Fire and Explosion instructor.

Robert C. Williams, B.S., C.F.E.I, C.F.E.
Vice President and Senior Technical Analyst.

Graduated from the University of South Florida with a Bachelor's of Science in Chemical Engineering. Robert was a member of the Golden Key National Honor Society, Tau Beta Pi - National Engineering Honor Society, and AIChE. He was previously an Electronics Communications and Cryptographic specialist with the U.S. Air Force and was a technical specialist with Jackson Products, a manufacturer of commercial dishwashing machines. Robert is a Certified Fire and Explosion Investigator through National Association of Fire Investigators and has Diplomat status with the American College of Forensic Examiners. Mr. Williams has over 20 years experience in the investigation of plumbing failures, plastic failure analysis, and fire and explosion investigations. Robert has provided expert deposition and trial testimony regarding plumbing failures, water intrusion, and fire origin and cause investigations.

Jim Bullington
Forensic Analyst

Samuel DuPont, MEE, PhD
Forensic Analyst

Samuel DuPont received a Master's of Environmental Engineering and his doctorate in Chemical Engineering from the University of South Florida in 2008 and 2012, respectively, with a research focus in material science and microbiology. Samuel has experience with numerous forms of microscopy and material characterization techniques such as: scanning electron microscopy (SEM), atomic force microscopy (AFM), and confocal microscopy with an emphasis on the 3D reconstruction of microscale surfaces. Samuel is also passionate about education in the science, technology, engineering, and mathematics (STEM) space and has worked since his time at the university developing unique and engaging curriculum for students from age 5 - 50.

Patrick G. Drottar, B.S., C.F.E.I, C.V.F.I, C.F.I.I
Forensic Analyst / Evidence Technician

Patrick joined Interscience, Inc. in July 2017. He graduated from Eastern Kentucky University with a Bachelor’s of Science in Fire and Safety Engineering Technology with a concentration in Fire, Arson and Explosion Investigation. He was previously a service technician in fire protection, specializing in the failure analysis of fire alarms and water-based suppression systems. Mr. Drottar is a Certified Fire and Explosion Investigator (CFEI) as well as a Certified Vehicle Fire Investigator (CVFI) and Certified Fire Investigation Instructor (CFII) through the National Association of Fire Investigators (NAFI). He has also given lectures on fire and vehicle investigations for NAFI at their many training programs around the country.

Melissa McNabb
Director of Client Services

Melissa has been with Interscience since 2000. She began as an evidence custodian and soon began handling some of the marketing and advertising as well. She now serves as Interscience’s Director of Client Services.

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