LUKE: I’m afraid you two won’t be able to follow me. From here I must go alone.
LUKE indicates the gas plant.
LUKE: (cont.) ...Now listen, this is important. I need you two to find a way in there without attracting any attention to yourselves, and shut down the pumps connected to the mines. I can sense that there are no soldiers in there, but Artoo, if you run into any trouble you know what to do. Remember the special modifications I gave you!
ARTOO whistles.
LUKE: Oh, and see if you can scramble the systems to buy us some extra time. After you’ve done this, I want you both to make your way back to the Falcon quickly, OK?
THREEPIO: I’d be most happy to go there now, Master Luke.
LUKE puts a reassuring hand on the golden droid’s shoulder.
LUKE: You’ll be OK, Threepio.
LUKE turns and makes his way silently through the fallen boulders toward the towering rock face. The anxious THREEPIO has no time to gather his courage, as he notices that ARTOO is already trundling off without delay to carry out their orders.
THREEPIO: Artoo! Wait for me, you thoughtless dolt!