Amateur Radio?
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"provid[ing] on a volunteer basis, a valuable public sector service to
their communities, their States, and to the Nation, especially in the
area of national and international disaster communications." It
mentions that amateurs provided emergency and disaster relief
communications services during both natural and manmade disasters. "The
Amateur Radio Service has formal agreements for the provision of
volunteer emergency communications activities with the Department of
Homeland Security, the Federal Emergency Management Agency, the
National Weather Service, the National Communications System, and the
Association of Public Safety Communications Officials, as well as with
disaster relief agencies, including the American National Red Cross and
the Salvation Army,"