if anyone lives within a reasonable drive to lower Michigan, you should make plans to play in the mich. monster game. It takes place at the end of July, i think 27th through the 30th. Its 6 hours on Saturday. and 6 hours on Sunday. and its the most intense big game in life.
The set up is really nice, they usually have some pretty good vendors, and stuff you can buy. there are 'tanks' , smoke grenades, Humvees and military transport trucks for the longer insertions, continuous play. the list goes on.
The refs at this event are also really good too, they are always in the action, and will escort players out that are caught in the middle of a big fire fight.
here is the link, look at the pics for the other games too to get a feel for the different areas of the field.