I have 21 years of experience and specialize in the field of fire science and engineering with specific knowledge in the areas of origin and cause, fire dynamics, smoke and carbon monoxide detection. I have published on such topics as building fires, liquid fuel fires (such as gasoline), and fire, smoke and carbon monoxide detection. I have testified 24 times on topics such as origin and cause, fire dynamics and detector response, and gasoline and flammable gas fires. My research includes both basic and applied forensic studies to develop fundamental understanding of fire dynamics, pattern formation and damage assessment, as well as to develop practical forensic tools for fire scene investigations, such as for calcination measurements, interpreting spill fire patterns and sampling for ignitable liquid residue. I have conducted multiple fire forensic research programs in the areas of compartment fires, smoke alarms, liquid fuel fires, electrical fires and flammable gas fires.