Elevator Mishaps and Identity Reveals

Peter takes a moment to take a good look at those around him. They're all terrified; even MJ looks a bit nervous, although she's hiding it well. Guy doesn't look calm anymore, his eyes are wide and frightened, and he flinches at every creak and shift. They're all breathing heavily as they try to stay calm, and it works somewhat, but not a lot.

The box makes an ear-piercing screech, followed by a loud scary grinding noise and then.. they were falling.

OR;

Peter gets the Decathlon Team a tour at Stark Industries and something goes wrong, leading to the reveal that Peter is their friendly neighbourhood Spider-Man.