Emergency Management Assistance Compact
The Nation’s All Hazards National Mutual Aid System.
EMAC helps states, territories, and the District of Columbia share personnel, equipment, and resources across state lines during disasters and emergencies—through a proven, legally supported process.
Explore EMAC resources, training, and tools for emergency management professionals, partners, and communities nationwide.
Find your starting point
Explore EMAC based on what you need to know.
Whether you are new to EMAC, preparing resources, deploying to a mission, managing reimbursement, or seeking training, start with the path that fits your role.
The EMAC process
Five phases. One proven system for mutual aid.
EMAC follows a structured process that helps states, territories, and the District of Columbia prepare for, request, provide, manage, and reimburse mutual aid during disasters and emergencies.
Phase 1
Pre-Event Preparation
Before an incident, State Emergency Management Agencies and Resource Providers prepare to use EMAC. This includes establishing procedures, identifying resource gaps, conducting training and exercises, planning for reimbursement, and developing Mission Ready Packages.
Phase 2
Activation
When an emergency or disaster may require interstate assistance, the affected state activates EMAC. The Requesting State establishes coordination, identifies resource needs, confirms operational capacity, and prepares to request support.
Phase 3
Request & Offer
The Requesting State shares its resource needs. Assisting States review the request, coordinate with Resource Providers, and submit offers of assistance. Once an offer is accepted, the states execute the Resource Support Agreement, or RSA, to document the mission.
Phase 4
Response
After the RSA is completed, resources mobilize, deploy, perform the mission, and demobilize. The Requesting State directs the mission; the Assisting State maintains accountability and supports deployed resources throughout the process.
Phase 5
Reimbursement
After the mission, Resource Providers document actual costs and submit R-2 packages. The Assisting State reviews and consolidates the claim on an R-1, the Requesting State issues payment, and the parties communicate until closeout is complete.
EMAC eLearning Center
Learn EMAC at your pace.
Build confidence before an emergency with self-paced online learning designed for emergency management professionals, Resource Providers, deploying personnel, finance and audit teams, contractors, and mutual aid partners.
Free self-paced learning
Start with the course that fits your role.
Whether you are learning the foundations of EMAC, preparing to deploy, building Mission Ready Packages, managing reimbursement, or supporting EMAC operations, the eLearning Center provides practical training to help you get ready.
Explore the eLearning CentereLearning Center login required to access courses and track completion.
Why EMAC
Mutual aid built for the scale and complexity of emergencies.
EMAC connects a nationwide membership through one proven system for sharing resources across state lines—before, during, and after disasters and emergencies.
Nationwide membership
55 EMAC Members. One mutual aid system.
All 50 states, the District of Columbia, Puerto Rico, the U.S. Virgin Islands, Guam, and the Northern Mariana Islands participate in EMAC.
All hazards
Ready for the emergencies states face.
EMAC supports mutual aid for natural disasters, technological hazards, public-health needs, civil emergencies, resource shortages, and other events that exceed available capacity.
All disciplines
Resources and expertise from across the emergency community.
EMAC helps connect emergency management, public safety, health and medical, public works, National Guard, logistics, planning, finance, and other response and recovery disciplines.
One system. All hazards. All disciplines. EMAC helps states help one another when resources are needed most.
EMAC across the emergency community
One system connects the people and capabilities needed to respond.
EMAC brings together a nationwide network of emergency management partners. Resources can include personnel, equipment, commodities, technical expertise, and operational support from across many disciplines.
Emergency Management
Coordinate mutual aid, identify needs, manage requests and offers, and support the full EMAC process.
Public Safety
Support law enforcement, fire and rescue, emergency medical services, search and rescue, and other life-safety missions.
Health & Medical
Provide health, medical, behavioral health, mass care, and other essential support during response and recovery operations.
Public Works & Infrastructure
Help restore transportation, utilities, engineering services, debris management, communications, and critical lifelines.
National Guard & Government Partners
Support a wide range of state and territorial capabilities when resources are requested through EMAC.
Resource Providers & Partners
Local governments, agencies, organizations, and other approved providers contribute resources through their Assisting State.
More than a resource list.
EMAC provides a coordinated framework for matching needs with available capabilities, preparing people to deploy, supporting mission accountability, and managing reimbursement after the work is complete.
For State Emergency Management Agencies
State-level tools for EMAC operations.
The EMAC Operations System supports the state-to-state operational process for EMAC requests, offers, Resource Support Agreements, and related mission coordination activities.
EMAC Operations System
Coordinate requests, offers, and Resource Support Agreements.
EOS supports authorized State Emergency Management Agency users as they manage the EMAC request and offer process, document accepted missions, complete Resource Support Agreements, and coordinate mission information.
Restricted access
EOS is available to authorized State Emergency Management Agency users as designated by the Director.
Go to EOSNeed EMAC training instead? The EMAC eLearning Center offers self-paced courses for a wide range of users, including Resource Providers, deploying personnel, finance and reimbursement teams, National Guard personnel, and EMAC A-Team participants. Explore the eLearning Center
Get started
Learn the EMAC system. Prepare your team. Strengthen mutual aid.
Explore the EMAC eLearning Center for self-paced courses that help you understand the system, prepare for a mission, support deployment, manage reimbursement, and build readiness before the next emergency.
eLearning Center login required to access courses and track completion.