Stories from the set

To avoid information leaks and possible spoilers, the film was given the working title «Freezer Burn».

To reach S.H.I.E.L.D.'s secret base, Captain America descends in an elevator to a depth of tens of feet. However, when an enemy appears, the heroes cover the same distance faster while descending to a much shallower depth.

Captain America's shield absorbs all vibrations, so it cannot ring or make any other sounds, since sound is vibration.

«Tetrodotoxin» (the substance that slowed Fury's heartbeat) is the poison of the pufferfish. It is lethal to the body and is not used for such purposes.

S.H.I.E.L.D. fighters are the most advanced of their kind. But one guy with a small number of grenades blows up S.H.I.E.L.D.'s entire air fleet in 3 minutes.

At the 63rd minute of the film, Dr. Zola's computer projection says that Natasha Romanoff was born in 1984. Later in the film, at the 71st minute, Johansson's character states that it seems she "traded the KGB for HYDRA." The USSR State Security Committee existed from 1954 to 1991, which means that Natasha Romanoff was a member of this organization while still a very young child.

The film is based on the comic book series by Joe Simon and Jack Kirby.

Although the filmmakers claim to have used computer graphics minimally, five graphics studios were responsible for the special effects.

Anthony Mackie was unhappy with the modern look of his character's (Falcon) costume. He wanted a red spandex costume like his character wears in the comics.

The Captain's new suit is taken from the comics. There he wore a similar one when he served as director of S.H.I.E.L.D.