The Pakistan Armed Forces are the military forces of Pakistan. It is the world's sixth-largest military measured by active military personnel and consists of three uniformed services—the Army, Navy, and the Air Force, which are backed by several paramilitary forces such as the National Guard and the Civil Armed Forces. A critical component to the armed forces' structure is the Strategic Plans Division Force, which is responsible for the maintenance and safeguarding of Pakistan's tactical and strategic nuclear weapons stockpile and assets. The president of Pakistan is the commander-in-chief of the Pakistan Armed Forces and the chain of command is organized under the Chairman of the Joint Chiefs of Staff Committee (JCSC) alongside the respective chiefs of staff of the Army, Navy, and Air Force. All branches are systemically coordinated during joint operations and missions under the Joint Staff Headquarters (JSHQ).