End of the River — B.L. Van Vors

He's an officer of the elite 68th Aerospace Resue and Recovery Squadron, one of five highly trained men chosen for a clandestine operation that must not fail. From the stinking hell of the jungle, into the silent web of worldwide espionage from which no one escapes, Michael Rumison is fighting with a superhuman will to live. His only way to stay alive - vanish from the face of the earth; his only remaining dream - the love of a beautiful girl.