General Walt, former Commander of the United States Marine Corps, reflected upon this information in his book that was written in the early 1980's.
This is the foundation of the whole story, right? The verification. The book written by "former Commander of the United States Marine Corps."
First, there's no such thing as the "Commander of the United States Marine Corps." It's the Commandant, as every senior professional officer would know.
Second, the Corps has never had a "General Walt" as either Commandant or Commander. Nobody with a first, last, or middle name of "Walter", "Walton", "Wallace", etc.
http://www.thefontman.com/commandants.htm
So flush this. It's pure paranoid conspiracy garbage.
Camp David was only woods at this time - look it up and see who david was?
A Presidents son who came after Truman !