The book 'First Blood' was way different than the movie. It took place in Kentucky and Rambo was a bit nuts. The sheriff was actually kind of nice to him at first but Rambo had a serious attitude problem. When he escaped he had no fancy knife and was stark, raving naked as he stole the motorcycle and took off. He wound up killing a lot of people, including the sheriff, and eventually began blowing up the town with dynamite. Rambo was killed at the end of the book by Col. Trautman. Trautman didn't know him, he was just a 'cleaner' sent in by the Army.
I have a hollow handle knife I got during the 1980's. It has good Japanese steel with a deep hollow grind and I took it to a young knifemaker, Vince Evans, who is now a well known swordsmith. He determined that the steel was rather good and the aluminum handle was actually cast onto a flared tang so it was rather strong. The tang is about 1/2 the length of the handle. The guy made me a really good leather sheath for it.
I replaced the original compass in the aluminum cap with a better water filled compass. The simple contents in the handle are a small magnesium fire tool, a USGI P38 can opener (surprisingly handy), thread, needles, fishhooks, monofilament fishing line, and a small amount of tissue paper to protect the compass lens from the contents and to be used as emergency tinder. On the sheath is a pouch that holds a 1"x3" diamond hone. That stuff in the handle could be a real life saver if need be. It was also designed so that the knife handle could be the socket for a spear shaft.
The design is very 1980's but I do like the cutting ability of the deep hollow grind. All in all the design is rather usefull. For a mass produced knife it was a good blade. The design didn't sell well and the inventory was blown out through a knife seller that normally sold medium to lower quality knives. They are a very good knife for the money.
I have been looking at another hollow handle knife recently that has really caught my interest. It is the Chris Reeve Sable IV.