A wee bit off topic but Bofors has an online video presenting it's 40mm multipurpose shell..
http://www.janes.com/defence/videogallery/videogallery.shtml
On topic, here's a list of some of the available online scanners in the Atlanta area..
http://www.shoutcast.com/directory/?s=scanner&numresult=100&x=32&y=16