Warning: light spoilers ahead.
They went out and recorded radio-controlled jets both flying and stationary.
Some of those sounds were more for the leg sounds the legs of Iron Patriot.
Credit: Marvel Studios
Yeah, that might be good for this.
There was a lot of trial and error.
Experimentation was also called for when the team set out to capture sounds for the house attack.
So instead of a ba-boom, it was just a ping.
But there were definitely moments of subtlety in the film.
