Dr. Guido F. Verbeck, Professor of Chemistry and Biochemistry at the University of North Texas, is an expert is mass spectrometry, specifically instrument design and development. Dr. Verbeck was a Proctor & Gamble Fellow at Texas A&M University, and Postdoctoral fellow at Oak Ridge National Laboratory. He has developed mass spectrometers over the past 20 years, and has been a member of the analytical community for 25 years. In this, he has developed many stand-off chemical detectors, and performed field work for the analysis of biomarkers (breast cancer, respiratory distress), airborne chemical weapons (Dugway S/K Challenge), and illicit drugs.