Since the end of the Vietnam war, there has always been the rumor that the USSR had taken downed pilots from the Viet Cong to Russia. While no one, that we know of, knows for sure is pilots were abandon this is where the USA's 'no man left behind' movement came from. Many authors have used this premise in stories over the years. I, myself have two short stories based on it.
Just when you think the USA is about to do the right thing by service man and women left behind, you just might be wrong, AGAIN, at least in this book, Charm School! From how the embassy finds out about this infamous school to how the men and women lived for years shows DeMille's genius and his masterful plotting which not all authors have. Charm School if not the first of Nelson DeMille's books, it's one of his early books. I think it is his best!