3-54. Command and support relationships pose challenges for synchronizing federal and state forces conducting DSCA tasks. As previously discussed in chapter 2, section III, Key Legal Considerations, the laws and legal authorities differ between federal and state forces operating within the homeland. The two usual and customary models used in domestic support are parallel command and dual status command. Under parallel command, federal forces take orders from the DOD chain of command, and state National Guard forces take orders from the state's chain of command. If dual status command is used, the President and the governor sign an agreement appointing one officer to command both federal and state National Guard forces. That officer serves simultaneously in Title 10, USC and Title 32, USC duty status. Although dual status command enhances command and control, it does not create unity of command. Missions for federal and state National Guard forces originate separately and must be conducted by their respective forces.