A closed beta is a limited release where only those who have been given access can test the software while an open beta or public beta is a free (as in liberty) release that allows anyone to download and try it out.
The Incident Command System (ICS) is a systematic tool used for the command, control, and coordination of an emergency response. ICS allows agencies to work together using common terminology and operating procedures for controlling personnel, facilities, equipment, and communications at a single incident scene.
Unified Command (ICS) In the Incident Command System, a Unified Command is an authority structure in which the role of incident commander is shared by two or more individuals, each already having authority in a different responding agency.