I hear every St. Paddy's a crack team of well trained commandos hit the Churchill statue in DC with green painballs in a well planned drive by. Even with the high security and location right next the to naval conservatory, they have yet to stop this tradition.
Oh, and I play paintball.
In fact, here in Limerick we have better paintball places than in the states.
http://www.combatzone.ie/
These guys have it right. They have the same pro gear that the SAS use to train with (i.e. the guns that resemble real M4's with the canister in the gun itself), proper paint grenades (not just balloons as I have seen), every piece of gear you could ever want, and acres setup in real military situtations. The Irish army practices here as does the police hostile situtations team.
On weekends, you can go there, sign up, and get on a team. Doesn't matter if yer raiding an office building to free hostages, or on the other side trying to keep the infidels from breeching yer building, or wading through hip dip mud avoiding incoming mortar fire, land mines, and booby traps - it's all good.