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 ICS is a system designed to manage any size of incident from its beginning until the requirement for management no longer exists. The Incident Commander is in charge of an incident and is a title that can apply equally to an engine foreman or to the chief of a department depending upon the situation. The structure of the ICS can be established to expand and contract as needed to meet the changing conditions of the incident.