(DoD) Any natural or man-made incident, including terrorism, which results in extraordinary levels of mass casualties, damage, or disruption severely affecting the population, infrastructure, environment, economy, national morale, and/or government functions.
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
| APA | Military Dictionary (DoD). (2011). catastrophic event. Retrieved September 20, 2026, from http://smartdefine.org/catastrophic_event/definitions/1960703 |
| Chicago | Military Dictionary (DoD). 2011. "catastrophic event" http://smartdefine.org/catastrophic_event/definitions/1960703 (accessed September 20, 2026). |
| Harvard | Military Dictionary (DoD) 2011, catastrophic event, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/catastrophic_event/definitions/1960703>. |
| MLA | Military Dictionary (DoD). "catastrophic event" 4 April 2011. Web. 20 September 2026. <http://smartdefine.org/catastrophic_event/definitions/1960703> |