An appraisal or determination of the effect of the disaster on human, physical, economic, and natural resources. 
1. The determination of the effect of attacks on targets.
2. A determination of the effect of a compromise of classified information on national security (source: JP 3-60). 
- ↑ Source: NFPA 1600-4: Standard on Disaster/Emergency Management and Business Continuity Programs
- ↑ Joint Publication 1-02: Department of Defense Dictionary of Military and Associated Terms (2016)