I've been on exercises with these guys before.
The FAA would hunt you down, beat you up, and possibly either put you in jail, or financially wreck you with fines, for using these in a paintball game's airspace

The only legal alternative is semi-autonomous, using R/C control in tandem with something home-brew or hobbyist built like the uNav PicoPilot to keep it on course.
imho, the best solution possible is a blimp for this specific usage. It'd have to be fairly large... 9 feet long, 5 feet in diameter, and you'd still be limited by anything over a 10mph wind. Easy to transport, easy to fly, stable camera platform.. just stay up a few hundred feet so ground fire doesn't pound it to pieces.