families figured in new york and chicago and that stuff. >> absolutely, chris. when i was at nypd we worked with the fbi to do the link analysis. we used to do it on big pieces of paper with stubby pencils which just as effective now, computerized. and it is -- quicker to fill in those gaps. just imagine a link analysis as a house with -- line over to a phone number and another line over to a person. as investigators work these leads, put people under surveillance and wire taps on, legal, of course, do their operations, those networks just keep expanding and each time there is a little node on that sheet, you run another investigation and you begin to break down the organization and penetrate it. i can tell you this has to be very exciting for those people. that information by the way which is being shared domestically already which is another good sign and that the sharing is happening and people are starting to run investigations here in the united states and based on that information from overseas. >> i'm asking about differences. you are both professionals.