0 in Britain, the middle or tactical level of a three-level system for organizing the way a police, military, or other operation is controlled, especially in an emergency situation:
Paramedic crews will not usually have access to Gold command directly but will be in contact with Silver command.
Silver command provides gold command with feedback and intelligence based on information that it gathers.
There may be a number of Silver Command centres depending on the nature and scale of the incident.
