Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Describes the functional approach which enables a higher-level understanding of impacts on the nation’s critical infrastructure, accounting for the assets, systems, networks, and components that underpin National Critical Functions.