RSS
A lot of mechanical and electronic devices have safety gear built in. For, you know, safety. Of course this means that if a group of MacGyvering heroes wants to do something cool (ane quite possibly explosive) with them, they may need to disable the safety gear that is designed specifically to prevent them doing what they're about to do.
So, this part of the procedure can be made difficult. Because safety gear is designed so that it's non-trivial to remove it. Let the heroes have to figure out some issues with what they're doing.
And then, once the safety gear is disabled, the thing is now unsafe. They better be careful with handling it!
Commentary by memnarch (who has not seen the movie)
I thought the need for explosives was a little odd at first. After all, the blasters they carry around are plenty energetic and can cause just as much damage, and that's not counting the ship-based weaponry! Then I realized, sometimes you don't have a clear line of sight to what you want to destroy. Or even if you do, you wouldn't have time to get to a safe distance before the fireball catches up to your face. I think I would have picked a better shape for transport and storage than a sphere-in-a-box though.
Odd looking character in the background there. They look much more frog-like than Admiral Ackbar does as well. The comments are also quite intriguing; are they a time-traveler of some kind or a being who's been Rip Van Winkled and just woke up? They speak galactic standard English though, so they're probably not an extra-galactic being that's just arrived at least.
Transcript
Finn: I head to the Falcon to help Zeppo and Chewie prepare.
Chewbacca: Oh, there’s little preparing for what we are about to attempt.
Finn: How so?
Chewbacca: A terse imprecation prior to impending death serves my species.
Zeppo: Chewie! Remove all the safety interlocks.
Chewbacca: Though for some purposes a more loquacious one is called for.
Zeppo: And Finn, get those explosives on board.
Bollie Prindel: {in background} Excuse me... What planet are we on?
Finn: Explosives?
Resistance member: {in background} D’Qar. The Resistance base.
Zeppo: We want to blow stuff up, right?
Bollie Prindel: {in background} “Resistance”... What year is it?
Resistance member: {in background} 34 ABY.
Finn: Hopefully not ourselves?
Bollie Prindel: {in background} ... What calendar is it?
Zeppo: Well, that’s the real trick, isn’t it?