Internal medicine. Internal medicine or general medicine (in Commonwealth nations) is the medical specialty dealing with the prevention, diagnosis, and treatment of adult diseases. Physicians specializing in internal medicine are called internists, or physicians (without a modifier) in Commonwealth nations.
The Emergency Alert System (EAS) is a national public warning system that requires broadcasters, cable television systems, wireless cable systems, satellite digital audio radio service (SDARS) providers, and direct broadcast satellite (DBS) providers to provide the communications capability to the President to address the American public during a ...
There are three main components to emergency communications: 1  911 call processing and delivery through Public Safety Answering Points (PSAP) and call dispatch; 2  The Emergency Alert System; and. 3  Radio and/or broadcast or cable television station news and updates.