If you think paintball is a bit hazardous come take a look at the Nerf Gun Battle shootout on November 2 from 10 to 3 at the Community Center Gym up in American Canyon. The costumed competitors have guns that look like shotguns, even crossbows, but they fire soft darts, considerably less damaging than paint balls, in a battle zone thick with obstacles, tunes and bunkers. Free. Bring your grandkids. And yes, it’s free.