Defense Coordinating Officer [DCO] Law and Legal Definition

Defense coordinating officer commonly called as DCO is a military or civilian official appointed by the Department of Defense (DOD) to exercise some delegated authority of DOD. DCO is the DOD’s single point of contact for domestic emergencies. DCO coordinates military support to civil authorities, forwards mission assignments through proper channels to the appropriate military organizations, and assigns military liaisons, as appropriate, to activated emergency support functions.