The secret of Rambo

As you all know Rambo is a fearless hero who did incredible things such as attacking a helicopter with a tank,killing 50 people at same time with a machine gun.But don't you wonder where 'rambo' comes from?
Recently author David Morrell,creator of Rambo, has given some informations about his new book and about his immortal hero,Rambo, at his own website.
David Morell,who said that he was looking for a specific name for his hero while he was writing Rambo 's first adventure 'The First Blood' 40 years ago, expressed that in those times his wife found an apple on her way to home and took it to home. The successfull writer added how delicious the apple was. When he asked his wife for the name of apple, he recieved the answer. The name of apple was Rambo. Then he liked it and decided to give this name to his unnamed hero.
This apple started to be recognized in 1640s. The first man to plant this apple's tree is John Chapman who is also known as John Appleseed. As you see the source of this surname is clear. In the end, I will give a bad new about this delicious kind of apple. There is a big depletion in number of Rambo trees....