John McCain works in politics.
John McCain . He retired from the Navy as a captain in 1981 and moved to Arizona , where he entered politics . The Committee on Armed Services ( sometimes abbreviated SASC for Senate Armed Services Committee on its Web site ) is a committee of the United States Senate empowered with legislative oversight of the nation 's military , including the Department of Defense , military research and development , nuclear energy ( as pertaining to national security ) , benefits for members of the military , the Selective Service System and other matters related to defense policy .