None, really just woodsball at people's houses and a couple of tournaments with fields set up just for the tournament.
Refs made sure that barrel sleeves were used/masks down in areas where you were supposed to. Ramping is not allowed during normal hours. Only problem with safety is velocity wasn't regulated unless refs thought you were shooting fast.
Fields were great, 3 speedball and one field of spools and 2 scenario. The "Alamo" woodsball field was flawed, because the alamo takes up most of the map and two choke points are formed on the outer edges(you could charge the hallways, but i never did.) The village was AWESOME. Nothing was rickety or rotting on any field.