Critical Infrastructure Warning Information Network

Overview
The Critical Infrastructure Warning Information Network (CWIN) is

{{Quote|DHS' only survivable network, a critical communications platform not dependent on the Public Switch Network (PSN) or the public Internet that can communicate both data and voice information in a collaborative environment in support of infrastructure restoration. CWIN provides a survivable, dependable method of communication allowing DHS to communicate with other federal agencies, state and local government, the private sector, and international organizations in the event that primary methods of communication are unavailable.