Heres a video that someone through together of an event in minnesota that I was at. It was damn fun, better than any paintball match I've done. We had probly 30 guys/side into squads of 6 (our side atleast). One side attacked up a wooded hill while the defenders defended all the buildings and at the end were driven into the final barn which we finally assaulted. This was about a year and a half ago IIRC. Alot of ex-military guys, police, and some ex-swat members attend regularly.
http://tig-ol-bitties.net/files/WacoTape2.mpeg