sherloques:

Captain America: The Winter Soldier Audio Commentary:

“We always wanted to approach Sam through the prism of being a fellow veteran, someone who could speak to Steve on that level as opposed to in awe of him because he’s Captain America. Also it brought the idea that Steve, in addition to everything else he’s gone through, spent 4 years in WWII. That’s very traumatic stuff. And he has never had a chance to decompress about any of it.

This is probably the hardest scene in the movie because it leads to one of the the biggest buys in the film: that Cap is gonna go back to the guy he met jogging on the Mall when his life is in danger because he’s the only guy he can trust. So it’s important that these two connect on a very deep and emotional level in this scene.”