"Only gotta last longer than everyone else," he pointed out, fingers flexing at his side. There's a number of options available here. He can turn his back on the old guy, stake him out for bait for these things -- Xenomorphs, really? Where's Arnold when you need him? -- or accept his help. So far, he doesn't seem that useful.

Option two seems pretty good. He's not armed but if he gets the drop on the guy, he's pretty certain he can snap his neck before he has a chance to retaliate. Better to feign an alliance up until that point, however, and he straightens his back.

"So what's the plan, exactly?"