Community Shielding

When a terrorist attack or disaster strikes, how individuals and communities respond will be the most important factor in survival. After an attack involving a dirty bomb or biological agent, the instinct to flee can be dangerous. Highways out of an affected city may seem like the obvious escape route, but they can quickly become gridlocked, leaving people trapped and exposed. In most cases, staying home or finding another safe location nearby offers the greatest protection.

This holds true for both physical and emotional safety. People make better decisions in stable, familiar surroundings — and worse ones when they are frightened and displaced. Community Shielding, a broader version of shelter-in-place, applies this same logic at a larger scale: just as cells survive within the structure of an organ, people are safer when supported within their own communities. When neighborhoods are organized to support shelter-in-place, first responders are less likely to be overwhelmed by chaotic and unnecessary evacuation attempts.

Community shielding is a strategy first developed in 2002 in response to the anthrax mail attacks. It was designed to protect large populations in the event of a serious biological threat. The concept remains relevant today and works alongside tactics like social distancing to provide a broader framework for crisis response.

To be effective, any public health strategy must build on proven principles: surveillance, detection, containment, and isolation. These steps reduce illness and death while preserving the capacity of medical systems to handle surges in care. Community shielding is most effective when planned and put in place before a crisis hits.

The strategy is based on a simple reality: whether the threat is a natural outbreak or a terrorism-related attack, a coordinated community response serves the public better than a fragmented one. Effective leadership and clear communication are essential, especially when contagion can ripple across physical, emotional, social, political, and economic lines.

Since community shielding was first introduced, social media and big data have transformed how information spreads. These tools hold real promise, but they also carry risk. The flood of online communication can be hard to navigate, and misinformation can spread as fast as the truth.

At its core, community shielding is a cooperative effort. It brings together individuals, families, local government, businesses, nonprofits, faith-based groups, and other community resources to ensure that people sheltering in place have access to food, water, medication, and other essentials. Federal and state support is needed to make this work equitably across regions. While community shielding can function as a national strategy, it must be tailored to each community and grounded in established public health principles.

Community shielding offers a range of practical benefits. It encourages people to prepare now rather than react in a crisis. It promotes self-reliance and local planning. It allows people to stay in their homes instead of evacuating unnecessarily. It is voluntary and represents one of the least restrictive forms of public health intervention — far less disruptive than forced quarantine or isolation. It can be deployed quickly and early, which may reduce the need for more drastic measures later.

Community shielding also supports mental and emotional well-being during a crisis, leading to calmer, better decision-making. It reduces the risks that come with panic and mass evacuation. It helps slow the spread of disease with minimal disruption to daily life. And it empowers people to face a crisis with unity, hope, and resilience rather than fear.

Community Shielding in an Urban Military Environment
Saathoff GB, Holstege CP, et al.; 2006-7.Director, Homeland Security Policy Instistute

Bioterrorism and Pandemic Influenza
Testimony of Frank J. CilluffoDirector, Homeland Security Policy Instistute

Community Shielding Report
A Survey of Citizen Response to Potential Critical Incidents

Community Shielding Policy Analysis
Vicki J. Hunt

House Joint Resolution on CIAG
February 18, 2003

Mass Evacuation and Our Nation’s Highways
Carolina PlanningWinter 2005