On June 21, 1961, in a dusty small town in Texas, about 60 miles south of Houston, President John F. Kennedy stepped up to the podium to make a speech before the assembled throngs of people below. Or rather, his aides did. The ongoing Cuban missile crisis demanded his presence in Washington, so he instead gave the speech through a telephone call. The matter, however, was deemed of sufficient importance that Vice-President Lyndon Johnson was in attendance.