TANGOS - slang for terrorists

TARGET - target (person, place etc) of intelligence agency's interest

TERMINATED - assassinated

TERRORIST Organizations

TORTURE

THREATCON - Threat Condition (replaced by FPCON)

TRADECRAFT - proficiency / experience in espionage

TRAFFIC ANALYSIS - communication patterns examined to determine information they might carry (even secure communications which cannot be decrypted)

TRUTH DRUG \ TRUTH SERUM - A truth drug (or truth serum) is a drug used for the purposes of obtaining accurate information from an unwilling subject, most often by a police, intelligence, or military organization on a prisoner.

UAV - unmanned aerial vehicle - controlled remotely, this can be as large as a plane or as tiny as an insect with implanted microchips and sensors

UKUSA - a SIGINT alliance consisting of the English Speaking countries (UK, USA, Canada, Australia, New Zealand). Its main purpose is to operate the Echelon

UNIT 8200 - Elite unit of the Israeli Military

VOICE STRESS ANALYSIS (VSA) is a controversial technology that attempts to examine and measure a physiological stress component, by extracting micro tremors from the voice of a person and measuring their amplitude. Voice stress analysis is often applied as a type of lie detector. The technique's effectiveness remains debated. Multiple studies have concluded that VSA's accuracy at determining a subject's truthfulness is not significantly better than chance. However, many police and intelligence agencies have alleged that VSA is indeed useful in determining a person's truthfulness.

WALK-IN - someone who volunteers to offer its services as an agent

WATCH LIST - contains paople who are of interest to intelligence agencies

WET JOB / WORK - euphemism for murder, assassination

WHITE SOUND, PINK SOUND - emitted to foil electronic eavesdropping devices