A Nebraska food supply expert says the state takes threats of agroterrorism seriously and is always on the lookout.
University of Nebraska at Lincoln food science professor John Rupnow says agroterrorism targets animals and crops with disease-causing agents in an attempt to disrupt the economy. Nebraska takes these threats seriously because it's one of the nation's leading food-producing states.
Rupnow says anyone that works with biological agents that could be used against crops and animals must register with the federal Food and Drug Administration and the Agriculture Department.
While Rupnow says spreading a biological agent in crops would not be practical, the real concern is spread of disease among farm animals.
He points out the mad cow scare in Washington state as an example of how vulnerable the U.S.'s meat industry is.