The UCG brings the principles of unified command/coordination to the JFO and the resource coordination system. It is important to remember that this group actually commands the resources that are assigned to the JFO and other FEMA operations but only coordinates the resource and support needs of the incident.

The UCG functions as a multiagency coordination entity (as defined by the NIMS) and works to establish joint priorities (single or multiple incidents) and allocate resources, resolve agency policy issues, and provide strategic guidance to support Federal incident management activities. The exact composition of the JFO is dependent on the nature and magnitude of the incident. The UCG provides strategic guidance and resolution of any conflicts in priorities for allocation of critical Federal resources. If policy issue resolution cannot be achieved among UCG members, issues can be raised to the Incident Advisory Council (IAC) or through the appropriate agency chain of command for consideration by higher authorities. Unresolved resource issues may be handled by the RRCC, the NOC-NRCC, or the IAC, or they may be forwarded through the respective agency chains of command if further deliberation is required to ensure unity of effort.