The Golden Arches have been part of America's landscape for a-half century now. Today marks the 50th anniversary of the day a milkshake machine salesman opened his first McDonald's in a Chicago suburb. Ray Kroc had traveled to San Bernardino, California, to find out why Richard and Maurice McDonald bought ten milkshake mixing machines for their hamburger stand. Kroc saw a revolutionary method of preparing food called the Speedee Service System and decided it could be replicated all over the country. He used it to start a small chain of hamburger stands that eventually became an empire including 30-thousand restaurants serving 50 million people a day. It's a symbol of the United States all over the world.