The United States Air Force's 163d Combat Communications Group communications unit, headquartered in Sacramento, California, is one of eight Air National Guard Combat Communications Groups nationwide, which make up 80% of the U.S. Air Force tactical communications capability. The 163d CCG is one of five major organizations that make up the California Air National Guard. The 163d provides command, control, supervisory management, and training of four Combat Communications Squadrons, as well as administrative management of one Engineering Installation Squadron, one Intelligence Squadron, and one Space Operations Squadron.