1. The Germans signed the ‘Pact of Steel’ with what country on May 22, 1939?
2. The so-called Truman Doctrine — which was signed into law by on May 22, 1947 — stated that the U.S. would support what two countries against Soviet influence?
Philippines and Indonesia
Iraq and Iran
Finland and Sweden
Turkey and Greece
Japan and Korea
3. What was the name of the Skipjack-class nuclear submarine that sank after an accident on May 22, 1968?