The Public Information and Warning capability is described as the delivery of coordinated, prompt, reliable, and actionable information to the whole community through the use of clear, consistent, accessible, and culturally and linguistically appropriate methods to effectively relay information regarding any threat or hazard, as well as the actions being taken and the assistance being made available, as appropriate.

In the context of Protection, this is the capability to provide warning systems to communicate significant threats and hazards to involved operators, security officials, and the public.