He heard shots, he ran in that direction. Even without taking in consideration his years in the Military Police, it was a reflex to run towards the area where his help might be needed. Of course, he lacked the fire power he'd once had, but he could still have a look, make a plan and be warned. Were the scorpions out again?
No, not the scorpions.
He saw the machine first. Like no android he had ever seen. He was trying to figure out what kind of creature it was when he realized who was fighting it.