He heard the footsteps before he saw the man, turning to look at him and seeing something much more akin to Iron Man than a normal person. The footsteps had sounded very heavy, much like Stark's when in his suit. But there's no time to think about that as the man hits the ground.

No, the only thing he thinks about is getting over to the man while looking around to make sure there are no other immediate threats. Seeing none, Steve kneels down by the man, rolling him over on to his back with ease.

First he tries to move the HUD, but when it doesn't move easily, well, Steve isn't going to Thor it off, just in case that makes things worse. Instead, he checks if he's still breathing and feels what skin he can for his temperature.

Shit, this guy is totally overheating, he needs to get him inside and now.

With some effort, he hoists the man up and against his shoulder as he stands with some difficulty due to the weight. If he had to walk too far, he would have had to drag the guy, but luckily the theatre is right at his back. Once inside, Steve sets the man down against the wall, double checking that he's still breathing as he gets some water and a shred of curtain to dab the guy's face in hopes to help him cool off faster.