Emmanuel Hansen stands in front of his playing field with his airsoft rifle, which shoots 22 pellets per second. Lex Treinen photo.

There’s a battle raging two miles outside of Haines.

Ten masked young men carrying M4-style rifles storm up a hill under the mossy canopy of Sitka spruce, dodging behind tussocks and climbing over slippery fallen logs to get closer to their enemy.

They’re trying to capture the top of the hill from their…