FAS

Defense Support of Civil Authorities: Overview

08.16.16 | 2 min read | Text by Steven Aftergood

The conditions under which U.S. military capabilities can be brought to bear in domestic civilian affairs are explained in a new threevolume manual published last week by the Department of Defense.

As a rule, DoD intervention comes “in response to a request for assistance from civil authorities for domestic emergencies, law enforcement agency support, and other domestic activities. The most visible support is provided during major natural and man-made disasters and other incidents.”

Except in cases of imminent loss of life or similar extremes, requests for military assistance are supposed to undergo a threshold review to establish their legality.

“A key factor in determining whether DoD should provide support of non-DoD entities is identifying the authority that directs or allows the support. U.S. law, Presidential Executive Orders and directives, federal regulations, and DoD policies provide the framework and authorities for DoD to provide support of non-DoD entities…. Responsibilities also may be reflected in memorandums of agreement (MOAs).”

The new DoD manual details the elements of that legal and regulatory framework. It identifies the six standing Execute Orders (EXORDs) that authorize DoD support to civilian authorities, the relevant presidential directives, and the array of other instructions, regulations, statutes and directives that constrain or empower the U.S. military in domestic civilian matters.

The manual addresses DoD rules for the use of force (RUF), and describes a wide range of potential DoD missions in the civilian arena, including: search and rescue, explosive ordnance disposal, response to chemical, biological, radiological or nuclear incidents, pandemics, acts of terrorism, mass migration emergencies, and civil disturbances, as well as support to National Special Security Events and to national and international sporting events, among other missions.

See DoD Manual 3025.01, Volume 1Defense Support of Civil Authorities: Overview, August 11, 2016

DoD Manual 3025.01, Volume 2Defense Support of Civil Authorities: Incident Response, August 11, 2016

DoD Manual 3025.01, Volume 3Defense Support of Civil Authorities: Pre-Planned DoD Support of Law Enforcement Agencies, Special Events, Community Engagement, and Other Non-DoD Entities, August 11, 2016

publications
See all publications
Emerging Technology
Blog
Team Science needs Teamwork: Universities should get in on the ground floor in shaping the vision for new NSF Tech Labs

At a time when universities are already facing intense pressure to re-envision their role in the S&T ecosystem, we encourage NSF to ensure that the ambitious research acceleration remains compatible with their expertise.

12.12.25 | 4 min read
read more
Emerging Technology
Blog
NSF Plans to Supercharge FRO-style Independent Labs. We Spoke with the Scientists Who First Proposed the Idea.

FAS CEO Daniel Correa recently spoke with Adam Marblestone and Sam Rodriques, former FAS fellows who developed the idea for FROs and advocated for their use in a 2020 policy memo.

12.12.25 | 10 min read
read more
Government Capacity
Blog
Demystifying the New President’s Management Agenda

In a year when management issues like human capital, IT modernization, and improper payments have received greater attention from the public, examining this PMA tells us a lot about where the Administration’s policy is going to be focused through its last three years.

12.11.25 | 20 min read
read more
Government Capacity
day one project
Policy Memo
A Digital Public Infrastructure Act Should Be America’s Next Public Works Project

Congress must enact a Digital Public Infrastructure Act, a recognition that the government’s most fundamental responsibility in the digital era is to provide a solid, trustworthy foundation upon which people, businesses, and communities can build.

12.08.25 | 18 min read
read more