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 next ICS principle is clarity of command or who is in charge. The National Incident Management System defines command as the act of directing, ordering, or controlling by virtue of explicit statutory, regulatory, or delegated authority. When you are using ICS to manage an incident, an Incident Commander is assigned.