Flip-Phones and Slamming Doors

Tony Stark is the head of the Avengers, the focal point for all intergalactic hero communications, and the liaison between humanity and superhumanity. Tony Stark is also trying to get ready for an assault on the entire planet. That said, he really doesn't have time to deal with the six intruders in the holding cells downstairs. Why does Steve have to be such a drama queen?