"Federal Departments and Agencies rely on emergency communications capabilities to support mission critical operations, such as law enforcement, homeland defense, and response to man-made or natural disasters. Lessons learned from the 9/11 terrorist attacks, Hurricane Katrina and Super Storm Sandy illustrate the need for improved emergency communications coordination across the Federal government and among State, Local, Tribal, and international agencies. To address these issues, Congress created the Emergency Communications Preparedness Center (ECPC), and Department of Homeland Security (DHS) Secretary Janet Napolitano established the OneDHS Emergency Communications Committee, a sub-group of the ECPC, to coordinate intra-DHS emergency communications activities. The DHS Office of Emergency Communications (OEC) administers both the ECPC and the OneDHS Emergency Communications Committee. To address interoperability issues along the U.S.- Canada border, DHS and Public Safety Canada established the Canada-United States (CANUS) Communications Interoperability Working Group (CIWG). OEC serves as co-chair of the CANUS CIWG."
Department of Homeland Security: http://www.dhs.gov/