A nice innocent horror movie, something to culture Steve with. They expected him to be scared, after all, he hadn't really lived in the age of horror movies. In truth, they'd picked a weak horror movie and had decided only to watch one. They were all scared that they'd see something a little too familiar. Bruce had even decided to skip the movie for fear of it being too much of a trigger.
All in all, they expected Steve to be the most affected, maybe Natasha if she let her guard down.
So why was it Tony who was curled in on himself, trying desperately to block out sounds that weren't there?
JARVIS turned the movie off the second it happened, but it caused no change in Tony. Natasha stretched slightly before getting off of the couch, motioning for the others to do the same. "JARVIS, where is Pepper?"
"She left for Malibu not ten minutes ago, Agent Romanoff." JARVIS responded. "Should I call Doctor Banner instead?"
Natasha nodded. "Bruce has the best chance of calming Tony down." And that was the truth of it. None of the other Avengers knew Tony well enough to be able to help him in a panic attack for which there were no triggers they knew of. The whole movie had only consisted of screaming, so far.
They all stepped away from Tony, who was breathing quickly and rocking slightly as he tried to block his ears. His mouth was open in a silent whimper.
Bruce ran into the room a couple of minutes later, visibly distressed. Everyone took several steps away from him, too. "Tony." He said quietly. There was no response nor change in Tony's actions. "Tony, you're not there, you're on the common floor. I'm the only one speaking." Tony sat down next to Tony on the couch and put a hesitant hand on Tony's shoulder.
Clint and Natasha flinched.
Tony's reaction was odd, not the usual fighting response to contact when in physical contact whilst in a flashback. He instead flinched away, but then leaned into Bruce's touch. At the response, Bruce mumbled comforting nonsense to Tony.
It seemed like hours later when Tony removed his hands from his ears and fled the room.
It was the first sign that something was wrong.