Share This Article 1. In 1880 he was the richest man in America. Jay Gould John J. Astor William Vanderbilt John Rockefeller 2. The Big Three Allied leaders of World War Two first met all together at this city. Tehran Casablanca Quebec Yalta 3. During Vietnam, Military Occupational Specialty 94B was this. Truck driver Parachute packer Food service specialist Military police Loading …