agent handling analysis of competing hypotheses black-bag cryptanalysis black operation cointelpro casualty estimation clandestine humint clandestine humint and covert action clandestine humint asset recruiting clandestine humint operational techniques clandestine cell system clandestine operation cognitive traps for intelligence analysis concealment device counter-intelligence counter-intelligence and counter-terrorism organizations counterintelligence failures cryptography dead drop direction finding eavesdropping electro-optical masint espionage false flag federal bureau of investigation fingerprint forgery geophysical masint humint industrial espionage intelligence analysis intelligence cycle management intelligence cycle security interrogation list of counterintelligence organizations lock picking mail materials masint non-official cover nuclear masint numbers station official cover one-way voice link open source intelligence photography politics of the united states radar masint radiofrequency masint signals intelligence special reconnaissance special reconnaissance organizations steganography surveillance tempest technical intelligence traffic analysis words of estimative probability