There are three geographical subspecies: Sciurus griseus griseus (central Washington to the western Sierra Nevada in central California); S. g. nigripes (from south of San Francisco Bay to San Luis Obispo County, California; and S. g. anthonyi, which ranges from San Luis Obispo to northern Baja California).
Unity of command is ensuring unity of effort under one responsible person (or commander) for completing a task. This unity of command is one of the twelve principles of joint operations, and is defined as:
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.