Western Union has taken of 451st position in the rating Fortune 500 in 2009, having moved from 473rd line in 2008. In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. In October 2006 the company made an initial public offering of shares on the New York Stock Exchange, becoming independent from First Data company. The Western Union Company is a financial services and communications company based in the United States. The first offices of company were located in the Reynolds Arcade building in Rochester, New York. The sign above the main entrance to the building - Western Union made so that the time in all of American civil services was the same.