Jim's eyes widen as the massive canon comes into view. Yeah, never mind suit power levels, it's not like those matter if this thing slices them up in half. Which, apparently, is what it's aiming to do.

"Shit!" Before thinking twice, he grabs Clara and lunges forward and towards the ground, a few feet closer to the robot but hopefully enough to get them both out of the laser's way before they lose any limbs.