re: Chickenhawk
I have done some flying with a guy that, while flying helicopters in Vietnam, came to know - or at least indirectly know of - the author of Chickenhawk. The story I got is that it's somewhat more of a collection of war stories that in some cases happened to people *other* than the author, rather than a pure autobiography.
I have no way of determining whether this is true or not, but I respect the pilot that told me these things and thought it was worth a post. FWIW I thoroughly enjoyed the book when I read it many years ago.
cheers,
Dave Blevins