Sheriff Teasle: Whatever possessed God in heaven to make a man like Rambo?
Colonel Trautman: God didn't make Rambo. I made him.
During the motorcycle chase Rambo jumps over the train tracks, if you look close you can easily see the ramp
In the introduction to the 1988 Hodder Headline edition of the novel First Blood, author David Morrell says that he got the name Rambo from both a variety of apple, and the writer Rimbaud: "A French author's name and the name of an apple collided, and I recognized the sound of force."