Terrorism is the use of force or violence against persons or property in violation of the criminal laws of the United States for purposes of intimidation, coercion, or ransom. A chemical threat of terrorism involves the use of chemical agents, such as vapors, aerosols, liquids and solids that are toxic to people, animal or plants and is possible in the City of McKinney.
While a chemical threat has the potential to be lethal, chemical agents are extremely difficult to deliver in lethal concentrations. They are difficult to produce, and when used outside dissipate quickly. More information about some specific chemical agents Sarin, Soman and Tabun can be found below from Texas Department of State Health Services.