Foreshadowing in this movie

There is quite a lot in this movie.

One of the first one I noticed actually covers most of the MCU storyline and how the Avengers because Tony Stark realized he needed to become a leader that was on the Peace side vs the War side of Humanity. This is shown when Tony and Roadey are getting drunk on his plane near the start of the movie.

Roadey: I see in that mirror that every person
that's got this uniform on got my back!

Tony: Hey, you know what?
I'm not like you. I'm not cut out...

Roadey: No, no. You don't have to be like me!
But you're more than what you are. You don't see it.

I just never noticed it until all these years later. Just a few drunk guys talking about their day but it opens up the MCU storyline in a powerful way.