The Chairman Joint Chiefs of Staff Committee (CJCSC) is, in principle, the highest-ranking and senior most uniformed military officer, typically at four-star rank, in the Pakistan Armed Forces who serves as a principal staff officer (PSO) and a chief military adviser to the civilian government led by elected prime minister of Pakistan and the National Security Council. The role of advisement is also extended to the elected members in the bicameral parliament and the ministry of Defence. The chairman leads the meetings and coordinates the combined efforts of the Joint Chiefs of Staff Committee (JCSC), comprising the chairman, the chief of the Army Staff and chief of the Air Staff and the chief of the Naval Staff, commandant of marines, director general Coast Guards and Strategic Plans Division, and commanders of the service branches in the Civil Armed Forces and the National Guard.