Read book when I was ten. I enjoyed the suspense and it intrigued me enough to do some research because due to the fact the book is a thriller and at the same time fiction in a lot of the events I wanted to find out if such an airplane existed. Given that the book was written during the cold war the US was always trying to have and develop better military/reconnaissance technology and this book pretty much is an example of the prevailing US military/diplomatic thought of the times.