I added a few more squads to the ring - The Unforgiven, 99th Aggressor Squadron, Claim Jumpers (its 2015 now so they could be considered 10 yrs old), and the Airborne Kitchen Utensil Assault Group.
Also changed the link for the Arabian Knights to point to a more recent website I found, and changed the Flying Circus's logo.
http://tjlaven.brinkster.net/Flash/Many of the logos have links to their squads websites, and browsing some of these websites I have found some interesting links about aircraft performance, squad tactics, and ACM.
I'd still like to add the Sick Puppies (need a decent logo, and get more accurate logos for the Avengers and the Flying Mongrels - I have seen their squad noseart but 64x64 does not scale up well to the size of images I'm using in the ring).
Using that query link that Fugitive posted, I've learned the Blue Knights don't seem to have an active squad in the arena - Drex was the CO and apparently he's no longer active. There are some other squad I saw on the list that I remember and some and logos (like the 444th Air Mafia) had good websites, but apparently no longer active:
>NAZGUL<
444TH AIR MAFIA
4th Fighter Group
9. Jagdgeschwader 54
Green Mountain Boys