Bruce's stance doesn't change, but there's a similar subtle change in him at the sound of gunfire - not in response to it, but in knowing that something will be coming. A readiness to move, either forward or back, a lowering in the center of his gravity and stillness - and watchfulness.

He doesn't move, either, doesn't attack or suggest she try, but watches the movement in the distance, eyes narrowed against the glare of the setting sun. What he's seeing makes no sense to him, but it strengthens his impressions. Bipedal, but not really human - not moving like that.

That's why it makes no sense to him.

"We need whatever's locked in those computers."