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