NPCs are, as we've mentioned a few times before, completely disposable. Their purpose is to get massacred. So make sure you don't spend too long grieving over their loss.

Like any time whatsoever. You have much more important things to be worrying about after all, like your own character.

Oh, and it's fun making sound effects during a game.

Transcript

R2-D2: Come on... Eject! Why isn't it working?
Anakin: I took the liberty of locking you in. For your own safety.
R2-D2: What? Don't I get a say—
[SFX]: click
Anakin: And I just turned off the ship's translator.
GM: Another clone gets destroyed in the crossfire of the battle.
{clone fighter is blown up}
[SFX]: Kaboom!
{clone drifting in space}
Clone Trooper: Sorry about the shrapnel...!
Obi-Wan: I thought we couldn't hear the sounds.
GM: That... doesn't mean the noise doesn't happen.
Obi-Wan: But—
R2-D2: Oh, let him have his fun.
[SFX]: < blip ding eeroo diki-boppy >
GM: And that was the last clone.
R2-D2: Wow, we used them up fast.
[SFX]: < bzzt ding ba-nip >
Obi-Wan: Well at least the situation can't get any worse.
GM: An enemy fighter fires smart missiles at you.
[SFX]: Whoooosh!
[SFX]: Whoooosh!
R2-D2: Chaff! Release chaff!
[SFX]: < po-boodle bzzt po-boodle >
Anakin: I wonder what this "eject" button does...