Digital Observer organizes milsims, not regular tournaments..
I never took part in one of their events but I'd like to..
Also, there's not a real company organizing tournaments, each team does it if they feel like it or need money, some of them are part of regional championships that end up with the first team per region to take part in the national finals, but then again the event is organized by the hosting teams, not by a third party company, so even getting you links is pretty much impossible
