Threat 21 : Natural or manmade occurrence, individual, entity, or action that has or indicates the potential to harm life, information, operations, the environment, and/or property
National Incident Management System (NIMS), US Department of Homeland Security (DHS), Glossary of Key Terms, Washington, DC, USA 2008. http://www.fema.gov/pdf/emergency/nims/NIMS_core.p df, (Emr Mgt - Amer) {834}