Word: levels
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Dates: during 1960-1969
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...general, Negroes viewed the war as simply an extension of domestic racial prejudice to an international level. Each time these Negro students heard reports of large numbers of Viet Cong killed, they identified not with the American soldier but with the "enemy...
...many institutions of higher learning and their students to end uncertainty about the status of graduate students' deferments under the Selective Service Law of 1967, the announced decision of the National Security Council creates more problems than it solves. In addition to the handicap it places on advanced level education, its implications for the language-trained manpower needs of the nation are alarming. The decision means that most college graduates in 1968 and students ending their first year of graduate school in 1968 will be drafted in the near future...
...ground station at Brewster Flat, Wash. There the signal was ricocheted off the Lani Bird 2 satellite 22,300 miles above the Pacific Ocean, picked up in Ibaraki, Japan, and relayed through Tokyo to an additional 600 stations and millions of homes. From stadium to Scarsdale split-level to sake bar in Tokyo, the entire 100,000-mile journey took only a little more than half a second...
...World War II, almost everyone knows that the U.S. broke Japan's highest level "Purple Code" before Pearl Harbor. But precious few realize what the breakthrough entailed. The code was based on a rotor system-mazes of wires connecting two or more alphabetic rotors that change ciphers at every punch of a keyboard. The use of two rotors permits 676 different cipher positions; five rotors provide 11,881,376 codes...
...solution of the Purple Code fell to the U.S. Army Signal Corps' chief cryptologist, William Friedman, whom Kahn calls the world's greatest code expert. Friedman and his superb team had a head start. For example, they had already solved lower-level codes, and were familiar with common Japanese forms, such as "I have the honor to inform Your Excellency." As Kahn says, "these constituted virtual cribs...