John McCain was an American politician and military officer who served as a United States Senator from Arizona from 1987 until his death in 2018. He previously served two terms in the United States House of Representatives and was the Republican nominee for president of the United States in the 2008 election, which he lost to Barack Obama. 

McCain graduated from the United States Naval Academy in 1958 and was commissioned into the United States Navy. He became a naval aviator and flew ground-attack aircraft from aircraft carriers. During the Vietnam War, he was almost killed in the 1967 USS Forrestal fire. While on a bombing mission during Operation Rolling Thunder over Hanoi in October 1967, he was shot down, seriously injured, and captured by the North Vietnamese. He was a prisoner of war until 1973. He experienced episodes of torture and refused an out-of-sequence early repatriation offer. The wounds that he sustained during the war left him with lifelong physical disabilities.

He retired from the Navy as a captain in 1981 and moved to Arizona, where he entered politics. In 1982, he was elected to the United States House of Representatives, where he served two terms. He entered the US Senate in 1987 and easily won reelection five times, the final time in 2016.