Disaster
A disaster is a serious disruption occurring over a short or long period of time that causes widespread human, material, economic or environmental loss which exceeds the ability of the affected community or society to cope using its own resources.

Prevention
​is an action stops something from happening, or to keep something bad in check, like crime. 
Psychological trauma
is damage to the mind that occurs as a result of a distressing event. Trauma is often the result of an overwhelming amount of stress that exceeds one's ability to cope, or integrate the emotions involved with that experience​
Postvention
​is an intervention conducted after a disaster or traumatic event, largely taking the form of support for the victim, survivor, family, community, or first responder. 
Loss
is the state or feeling of grief when deprived of someone or something of value.
Domestic terrorism
violent, criminal acts committed by individuals and/or groups to further ideological goals stemming from domestic influences, such as those of a political, religious, social, racial, or environmental nature (FBI).
Risk assessment
is identifying and analyzing potential events that may negatively impact individuals, assets, and/or the environment; and making judgments "on the tolerability of the risk on the basis of a risk analysis" while considering influencing factors.
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International terrorism
​violent, criminal acts committed by individuals and/or groups who are inspired by, or associated with, designated foreign terrorist organizations or nations (FBI).
Crisis intervention
is an immediate and short-term psychological care aimed at assisting individuals in a crisis situation in order to restore equilibrium to their bio-psycho-social functioning and to minimize the potential of long-term psychological trauma.
Human trafficking
​involves the use of force, fraud, or coercion to obtain some type of labor or commercial sex act (Homeland Security). 
Counterterrorism
​also known as antiterrorism, incorporates the practice, military tactics, techniques, and strategy that government, military, law enforcement, business, and intelligence agencies use to combat or prevent terrorism.
Strategy
​is a high-level plan to achieve one or more goals under conditions of uncertainty, which includes several subsets of skills including tactics, siege craft, and logistics.