It's very important and realistic when using firearms to make absolutely sure that what you're firing at is a legitimate target/enemy.

Which means of course that PCs don't care about it.

Transcript

Trooper Sergeant: {on other side of closed door} Another phantom door malfunction. You know what to do.
{they blow the door open}
[SFX]: K-booom!
Trooper 1: Hey, are you the space tourists we should be protecting?
Chewbacca: Indeed we are. We—
[SFX]: Pow! {Han shoots}
Chewbacca: <sigh> Han, will you stop doing that?
[SFX]: Pow!
Trooper 2: Er. Are you the intruders?
Chewbacca: No, no, of course—
[SFX]: Pow! Pow! Pow!
[SFX]: Pow!
Trooper Sergeant: Now this is my last warning shot. If you keep killing my men, I'll have to start aiming at you.
Chewbacca: Methinks this is the time to exercise the better part of valour.
[SFX]: Pow!
Han: Right! After you!
[SFX]: Pow!
[SFX]: Pow!
{Chewbacca retreats into corridor, Han follows}
Han: Hey! We're charging in the wrong direction!