It's chance, mostly, that has him in the area; sure, he saw the ad, figured if the things were giving people trouble he could deal with it, but- well. He didn't exactly go out here looking for anyone other than the scarecrows, much less someone currently being overwhelmed by them. It doesn't mean he doesn't come to help, though - quite the opposite, despite him not being a hero. He's got a job to do, and here's here to do it

and, apparently, save someone else's ass in the process. A very familiar jackass, come to think of it, once his pulse rifle blows some holes through a couple of forms.

"What're you doing screwing around?" he demands as one decides that maybe it should turn its pulse rifle on the one with the bigger gun. This is almost insulting; he fought harder enemies in basic training.