File: In this Oct. 29, 1962, file photo, President John F. Kennedy poses in the White House office with Gen. David Shoup, left, Marine Corps Commandant, and Adm. George Anderson, Chief of U.S. Naval Operations in Washington. The chiefs met with the president to review the situation in Cuba and operation of the U.S. naval blockade. As the U.S. and Russia reached the brink of nuclear war in 1962, Kennedy received top-secret intelligence from the CIA that a new warhead launcher was spotted in Cuba. That report, given to Kennedy a day before the end of the Cuban Missile Crisis, is among roughly 19,000 pages of newly declassified CIA documents from the Cold War released Wednesday, Sept. 16, 2015. (AP Photo/William J. Smith, File)
File: In this Oct. 29, 1962, file photo, President John F. Kennedy poses in the White House office with Gen. David Shoup, left, Marine Corps Commandant, and Adm. George Anderson, Chief of U.S. Naval Operations in Washington. The chiefs met with the president to review the situation in Cuba and operation of the U.S. naval blockade. As the U.S. and Russia reached the brink of nuclear war in 1962, Kennedy received top-secret intelligence from the CIA that a new warhead launcher was spotted in Cuba. That report, given to Kennedy a day before the end of the Cuban Missile Crisis, is among roughly 19,000 pages of newly declassified CIA documents from the Cold War released Wednesday, Sept. 16, 2015. (AP Photo/William J. Smith, File) William J. Smith AP
File: In this Oct. 29, 1962, file photo, President John F. Kennedy poses in the White House office with Gen. David Shoup, left, Marine Corps Commandant, and Adm. George Anderson, Chief of U.S. Naval Operations in Washington. The chiefs met with the president to review the situation in Cuba and operation of the U.S. naval blockade. As the U.S. and Russia reached the brink of nuclear war in 1962, Kennedy received top-secret intelligence from the CIA that a new warhead launcher was spotted in Cuba. That report, given to Kennedy a day before the end of the Cuban Missile Crisis, is among roughly 19,000 pages of newly declassified CIA documents from the Cold War released Wednesday, Sept. 16, 2015. (AP Photo/William J. Smith, File) William J. Smith AP