"The Homeland Security Act" was amended in 2006 adding hr5852, (5) which includes provisions for inter-agency inter-operabilty and cooperation to 'conduct extensive outreach to foster the development of interoperable emergency communications capabilities by State, regional, local governments, and public safety agencies.'
It also describes ways to (8) 'promote the development of best practices to facilitate the sharing of information for achieving, maintaining, and enhancing inter agency cooperation capabilities for such response.'