I have 39 years of experience, and specialize in the field of veterinary toxicology with specific knowledge in the areas of feed additives, heavy metals and weapons of mass destruction (chemical and biological). I have published on such topics as poisonous plants, treatment of intoxications and risk assessment of gossypol in animals. I have testified on air and water pollution, feed additives and herbicides. I retired from the United States Army Reserve as a colonel in the veterinary corps and have some international experience. I have served on an ad hoc committee for the center for food safety and nutrition. I currently serve on several university committees.