Disc Four of the Alien Quadrilogy contains the Supplemental Material for "Aliens". Go to the chapter marked 'Post-Production'. When you've entered that chapter, you'll notice a series of five (5) icons. Press the UP button and you'll notice the second icon will be highlighted. Click on that icon and you will get the featurette entitled "A Boy and his Power-Loader"... it shows how a young man named Van Ling built his very own power-loader based on the movie and how it eventually got him a job working for James Cameron.