Presidential candidate John McCain addresses the delegates at the Republican National Convention, St. Paul, Minnesota, September 3, 2008 (Courtesy Library of Congress)
Republican National Convention, September 1-4, 2008. Sarah and Todd Palin with John and Cindy McCain on stage at the Republican National Convention, St. Paul, Minnesota, September 3, 2008 (Courtesy Library of Congress)
Presidential candidate John McCain and his wife Cindy greet the delegates at the Republican National Convention, St. Paul, Minnesota, September 3, 2008 (Courtesy Library of Congress)
Former POW Lt. Commander John McCain, April 24, 1973 (Courtesy Library of Congress)
Former POW Lt. Commander John McCain, April 24, 1973 (Courtesy Library of Congress)
Former POW Lt. Commander John McCain, April 24, 1973 (Courtesy Library of Congress)
Former POW Lt. Commander John McCain, April 24, 1973 (Courtesy Library of Congress)
Former POW Lt. Commander John McCain, April 24, 1973 (Courtesy Library of Congress)
U.S. soldier, Vietnam, 1969 (Courtesy National Archives)
Lyndon B. Johnson visit to the troops, Vietnam, October 2, 1966 (Courtesy LBJ Presidential Library)
U.S. Marine on patrol, Operation Kentucky V, Vietnam, 1967 (Courtesy National Archives)
Anti-Vietnam War, the Pentagon, Washington, D.C., October 22, 1967 (Courtesy National Archives)
Amphibious tractors transporting Marines, Vietnam, 1966 (Courtesy National Archives)
American soldiers standing among a destroyed village and dead bodies, Vietnam, August 14, 1966 (Courtesy National Archives)
A Viet Cong prisoner awaits interrogation, Thuong Duc, 25km west of Da Nang, Vietnam, January 23, 1967 (Courtesy National Archives)
An American Lieutenant giving instructions to his troops, Vietnam, March 18, 1967 (Courtesy National Archives)
Viet Cong prisoners, Vietnam, July 25, 1965 (Courtesy National Archives)
Two Marines with an old woman, Vietnam, circa 1960’s (Courtesy National Archives)
U.S. soldier waiting for medevac helicopter, Vietnam, circa 1960’s (Courtesy National Archives)
U.S. soldiers inspect hut, Vietnam, December 6, 1966 (Courtesy National Archives)
Anti-Vietnam War demonstration, the Pentagon, Washington, D.C. December 22, 1967 (Courtesy National Archives)
Student Mobilization Committee to End the War in Vietnam poster, 1970 (Courtesy Library of Congress)
US Marine wounded by Viet Cong booby trap, Vietnam, 1968 (Courtesy National Archives)
US troops carrying a wounded comrade through a swamp, Vietnam, 1969 (Courtesy National Archives)
Anti-draft demonstration, Selective Service System headquarters, Washington, D.C., March 19, 1970 (Courtesy Library of Congress)
Former Prisoner of War Lieutenant Commander John McCain sees his father for the first time since August 1967 at Jacksonville International Airport, Florida, 1973 (Courtesy Naval History and Heritage Command)
US Army soldier, Vietnam, May 31, 1966 (Courtesy Library of Congress)
Anti-Vietnam War protest, Washington, D.C., March 19, 1970 (Courtesy Library of Congress)
Anti-Vietnam War protestor burning draft card, Selective Service System headquarters, Washington, D.C., March 19, 1970 (Courtesy Library of Congress)
Anti-Vietnam War protest, Selective Service System headquarters Washington, D.C., March 19, 1970 (Courtesy Library of Congress)
Lieutenant Commander John McCain (front right) with his squadron and T-2 Buckeye trainer, 1965 (Courtesy Library of Congress)
Exterior view of the Hanoi Hilton POW camp
A welcome home sign to greet recently released prisoners of war home from vietnam, Travis Air Force Base, California, March 17, 1973 (Courtesy National Archives)
A view of the crowd gathered to welcome recently released prisoners of war home from Vietnam, Travis Air Force Base, California, February 1973 (Courtesy National Archives)
Former POW's cheer as their aircraft takes off from an airfield near Hanoi as part of Operation Homecoming, 1973 (Courtesy National Archives)
Lt. Commander John McCain exits an Air Force aircraft after being released from prison in Vietnam, at Clark Air Base, Philippines, March 14, 1973 (U.S. Air Force photo by Col. Cox, Courtesy Images of Freedom)
Lt. Commander John McCain, a former prisoner of war in Vietnam, is greeted by a service member after arriving aboard an Air Force aircraft at Clark Air Base, Philippines, March 14, 1973 (U.S. Air Force photo by Col. Cox, Courtesy Images of Freedom)
Lt. Commander John McCain, a former prisoner of war in Vietnam, is greeted by a service member after arriving aboard an Air Force aircraft at Clark Air Base, Philippines, March 14, 1973 (U.S. Air Force photo by Col. Cox, Courtesy Images of Freedom)
Lt. Commander John McCain exits an Air Force aircraft after being released from prison in Vietnam, at Clark Air Base, Philippines, March 14, 1973 (U.S. Air Force photo by Capt. Frank J. Adinolfi, Courtesy Images of Freedom)
Lt. Commander John McCain exits an Air Force aircraft after being released from prison in Vietnam, at Clark Air Base, Philippines, March 14, 1973 (U.S. Air Force photo by Capt. Frank J. Adinolfi, Courtesy Images of Freedom)
Lt. Commander John McCain aboard an Air Force aircraft after his release from prison in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain aboard an Air Force aircraft after his release from prison in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain aboard an Air Force aircraft after his release from prison in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain after being released from prison, at Gia Lam Airport in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain after being released from prison, at Gia Lam Airport in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain and other former POWs fly aboard an Air Force aircraft after being released from prison, at Gia Lam Airport in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain and Air Force Col. Kenneth A. Simonet fly aboard an Air Force aircraft after being released from prison, at Gia Lam Airport in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John escorted to a waiting Air Force aircraft at Gia Lam Airport after his release from prison in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain escorted to a waiting Air Force aircraft at Gia Lam Airport after his release from prison in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain escorted to a waiting Air Force aircraft at Gia Lam Airport after his release from prison in Hanoi, Vietnam, March 14, 1973 (U.S. Air Force photo by Tech. Sgt. James L. Baker, Courtesy Images of Freedom)
Lt. Commander John McCain after his release from prison in Hanoi, Vietnam, March 3, 1973 (Courtesy National Archives)
President Barack Obama meets with Senator John McCain in the Oval Office, Washington, D.C., February 2, 2011 (Official White House Photo by Pete Souza)
U.S. Representative John McCain, 1983 (Courtesy U.S. House of Representatives)
President Barack Obama and Senator John McCain in a press conference about government contracting reform, Washington D.C., March 4, 2009 (Official White House Photo by Pete Souza)
Senators John McCain and John Kerry talk during the Senate Commerce, Science, and Transportation Committee hearing on increasing consumer access to the Internet, Washington D.C. April 1999 (Courtesy Library of Congress)
John Kerry spokesman for Vietnam Veterans Against the War, April 21, 1971 (Courtesy Library of Congress)
Vice President Joe Biden talks with Senator John McCain before speaking at the McCain Institute for International Leadership Sedona Forum in Sedona, Arizona. April 26, 2013 (Official White House Photo by David Lienemann, Courtesy the White House)
President Ronald Reagan, at his desk in the Oval Office, speaking with Senator John McCain, Washington, D.C., 1987 (Courtesy Library of Congress)
President Ronald Reagan, in the Oval Office, shaking hands with Senator John McCain, Washington, D.C., 1987 (Courtesy Library of Congress)
President Nixon greets former POW US Navy Lieutenant Commander John McCain at a pre-POW dinner reception at the White House, Washington D.C., 1973 (Courtesy National Archives)
President Richard Nixon and US Navy Lieutenant Commander John McCain at the 1973 White House Correspondents Dinner, Washington D.C., March 14, 1973 (Courtesy National Archives)
President Ronald Reagan speaking with Senator John McCain at the White House, Washington, D.C., 1987 (Courtesy Library of Congress)
President Ronald Reagan with Senator John McCain at the White House, Washington, D.C., 1987 (Courtesy Library of Congress)
Senator John McCain prepares to board an aircraft after visiting the market district in Haditha, Iraq, March 16, 2008 (U.S. Marine Corps photo by Cpl. Erin A. Kirk, Courtesy Images of Freedom)
Senator John McCain stands with U.S. Marine Corps Maj. Gordon Hilbun in Haditha, Iraq, March 16, 2008. (U.S. Marine Corps photo by Cpl. Erin A. Kirk, Courtesy Images of Freedom)
Senators John McCain and Lindsey Graham at Sather Air Base, Iraq, March 16, 2008 (U.S. Air Force photo by Tech. Sgt. Jeffrey Allen, Courtesy Images of Freedom)
Senator John McCain tours the market district in Haditha, Iraq, March 16, 2008 (U.S. Marine Corps photo by Cpl. Erin A. Kirk, Courtesy Images of Freedom)
Senators John McCain, Joe Lieberman and Lindsey Graham arrive on Camp Bastion, Afghanistan, Dec. 7, 2008 (U.S. Marine Corps photo by Cpl. Pete Thibodeau, Courtesy Images of Freedom)
Members of the Haditha City Council greet Senator John McCain in Haditha, Iraq, March 16, 2008 (U.S. Marine Corps photo by Cpl. Erin A. Kirk, Courtesy Images of Freedom)
Senator John McCain sits with U.S. Marine Corps Maj. Gen. John Kelly, commanding general of Multi-National Force - West, in Haditha, Iraq, March 16, 2008 (U.S. Marine Corps photo by Cpl. Erin A. Kirk, Courtesy Images of Freedom)
Vice Admiral John S. McCain, USN with his son, Commander John S. McCain, Jr., on board a U.S. Navy ship in Tokyo Bay, circa September 1945, (Courtesy U.S. naval History and Heritage Command)President Barack Obama meets with Senator John McCain in the Oval Office, Washington, D.C., February 2, 2011 (Official White House Photo by Pete Souza)
Vice Admiral John S. McCain Sr., USN, (Courtesy National Archives)
Vice Admiral John S. McCain, Jr., USN, 1965 (Courtesy National Archives)
Vice Admiral John McCain, Jr., USN, 1965 (Courtesy Naval History Center)