James Williams 
Foot Soldier in the CIA [EPUB ebook] 

Any writing concerning espionage must necessarily center on the case officer and the operations they control. While the members of the Office of Technical Service provide the best of technical service to the directorate of operations, they are rarely afforded significant recognition. Their concern is that the technical aspect of every operation is as nearly perfect as possible. This story is an account of the way they approach their daily activities with high morale, unrivaled expertise, and the best sense of humor in all of CIA.