In Ant-Man, Anthony Mackie makes a susprise appearace as The Falcon, a clever way of tying the movie into the larger Marvel Cinematic Universe (and specifically Captain America: Civil War). Talking to Fandango, Kevin Feige had this to say about how the scene was conceived. "That came about in a really natural way, and it was actually the idea of Paul Rudd and Adam McKay. Peyton Reed had pointed out that in heist films, there’s usually a preheist. There’s usually a little adventure mission the characters need to go on before the primary heist – to get a tool, or get a device." That "preheist" involved Scott Lang breaking into what he think is an old Stark Facility, but...well, it's far from it! In reality, Hank Pym inadvertently sends him to the Avengers Facility!
"I said that would be cool, and not only that but I also told them we were introducing a whole new Avengers facility at the end of Age of Ultron. So not only could they encounter the Falcon, but it would make sense if he had to go to what he believed was an old Stark facility and was unaware it had now become a major Avengers facility. It sort of naturally spiraled like that." Feige then goes on to confirm that there were never any plans to introduce any additional Avengers, and that Falcon was always their first choice. He also warns fans that they should keep their eyes peeled during this sequence. "If you were to freeze the frame when Ant-Man is flying over the Avengers facility, there are new landmarks and buildings in that frame that you won’t see until Captain America: Civil War..." Are you looking forward to Ant-Man? Sound off below!