Yeah, turns out the add that in post production.
They've got to imagine they're flying around and fighting bad guys in the middle of a bright green room.
"When filming in Star Wars: Episode I - The Phantom Menace (1999), he kept imitating the noise of the lightsaber during his fights. George Lucas explained many times that this would be added in by the special effects people later on. Ewan said "I keep getting carried away."
Pa-too! Pa-too! You *know* this guy was making the noises while he was up in the Falcon harness. Look at how excited he gets just playing charades!
Neil Patrick Harris
When he talked about Guardians of the Galaxy on Jimmy Kimmel Pratt revealed that he kept ruining a $150,000 action scene because he kept making the laser gun noises.
The question now is: Where are the bloopers?
And how many other actors have done this? I think it's time for Jennifer Lawrence to fess up.