Ah yes... and other versions of the phonetic alphabet abound too. When I was working as a police dispatcher (when I was going through college for my computer degree), we had the following in use;
Adam, Baker, Charlie, David, Edna, Frank, George, Hotel, India (or Ida), Jack (or Juliet), King, Lima, Mike, November, Oscar, Poppa, Queen, Robert, Sam, Tom, Uniform, Victor, Wiskey, X-Ray, Zebra
I wonder how many "official" variants there are out there.... obviously in aviation we have the one standard.... but I know different police departments use different versions of the phonetic alphabet. Of course, different departments also use different response codes too. The "10-nnn" codes were never really adopted widely because of the use on Citizens Band radio channels, and the idea behind police department response codes is two-fold... one being to shorten traffic on the radio, and two to prevent everyone and their brother from easily figuring out what's going on if they are monitoring.... to avoid "ambulance chasers".