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.
The term may also refer to command and control systems within a military system. The 1988 NATO definition reads: Command and control is the exercise of authority and direction by a properly designated [individual] over assigned [resources] in the accomplishment of a [common goal].