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