IAEM AEM key terms

An approach that addresses all four phases of emergency management-mitigation, preparedness, response, and recovery-across all hazards and all levels of government and private sector.

Planning and capability-building that addresses the full range of possible emergencies and disasters, rather than preparing separately for each specific hazard type.

Sustained actions taken to reduce or eliminate the long-term risk to people and property from hazards, such as land-use regulation, building codes, and structural retrofits.

Activities, plans, training, exercises, and resources developed in advance so organizations and communities can respond effectively to an emergency.

Immediate actions taken during and just after an incident to save lives, protect property, and meet basic human needs, including warning, evacuation, and emergency sheltering.

The coordinated process of restoring critical infrastructure, services, housing, and economic and social life after an incident, often extending for months or years.

The systematic process of finding and documenting hazards that could affect a jurisdiction, including their location, frequency, and potential severity.

Analysis combining hazard likelihood and consequence with the vulnerability and exposure of people, property, and systems to estimate potential impacts and prioritize action.

Examination of the physical, social, economic, and environmental characteristics that make people or assets susceptible to harm from a hazard.

The susceptibility of specific population groups to harm from hazards because of factors such as poverty, age, disability, language barriers, or limited access to resources.

A standardized, on-scene, all-hazards management structure with defined roles, terminology, and span of control that lets multiple agencies work together under unified command.

An incident command arrangement in which representatives of multiple responding agencies jointly set objectives and make decisions together, each retaining authority over its own personnel.

The number of subordinates or resources one supervisor can effectively manage, commonly kept between three and seven in incident management.

A designated facility where officials coordinate information, resources, and policy decisions in support of on-scene incident management during an emergency.

A written plan for a defined operational period that states incident objectives, strategies, tactics, and resource assignments, and is approved by the command authority.

The time span for which an incident action plan is prepared and executed, typically 12 or 24 hours, after which objectives are reviewed and the plan is updated.

A grouping of government and partner capabilities organized by functional area, such as transportation or mass care, that provides coordinated support during a disaster.

The capability to establish and maintain a unified, coordinated response among organizations through shared plans, communications, and decision-making structures.

A national framework of doctrine, concepts, and principles that guides all levels of government and partners to work together during incidents.

The effort to ensure that essential functions of an organization can continue during and after a disruption, using alternate sites, backups, and pre-delegated authority.

A study that identifies time-sensitive functions and estimates the operational and financial consequences of disruption, used to set recovery priorities and objectives.

The target amount of time within which a function or system must be restored after a disruption to avoid unacceptable consequences.

The systems and assets-such as water, power, communications, transportation, and health care-so vital that their failure would seriously weaken security, the economy, or public health.

The essential community services and systems whose restoration most directly enables recovery, including safety and security, food and water, shelter, health care, energy, communications, and transportation.

Secondary failures or consequences that spread from an initial disruption through interdependent systems, such as a power outage causing water and communications failures.

A pre-arranged agreement among jurisdictions or organizations to share personnel, equipment, or services across boundaries when local resources are overwhelmed.

The process of identifying, ordering, tracking, allocating, and demobilizing personnel and equipment needed for an incident, including the use of resource typing.

A system that categorizes response resources by capability, such as teams or equipment, so that requests can be matched to standard definitions across jurisdictions.

A discussion-based exercise in which participants talk through a simulated scenario and their roles, testing plans and decision-making without deploying real resources.

An operations-based exercise that tests specific capabilities and coordination under realistic conditions, often in an emergency operations center, without full field deployment.

The most complex exercise type, involving real deployment of personnel and equipment and coordination across multiple agencies in a realistic, simulated incident environment.

A document summarizing an exercise or real incident, describing what happened, identifying strengths and areas for improvement, and assigning corrective actions with owners and deadlines.

A prioritized list of corrective actions drawn from an after-action report, with assigned responsibility and target dates for completion.

The needs of people who may require additional assistance before, during, or after an emergency because of disability, age, language, transportation, or medical dependencies.

The provision of sheltering, feeding, emergency first aid, family reunification, and distribution of relief supplies to people affected by a disaster.

Timely, accurate, and accessible messages delivered to the public before, during, and after an incident to guide protective actions and counter rumors.

The practice of sharing information rapidly and credibly during an emergency, using pre-scripted messages, designated spokespersons, and multiple channels to maintain public trust.

A facility where public information officers from multiple organizations coordinate messaging into a single, consistent voice during an incident.