Folks are arguing that the documents presented by CBS News are forgeries based on the fact that they are produced using proportional spacing. The argument is that proportional spacing wasn't invented for typewriters yet. Had they done some research on the question, they would have found that IBM invented proportional spacing for typewriters back in 1941.
As I've mentioned, military writing is chock-full of verifiable details. It's full of numbers, dates, times, places, individuals, etc. Either a forger would have to do an exceptionally careful job of seeing to it that all of his references were correct, or far more likely, the documents are the complete and authentic originals.