security intelligence: intelligence on the identity and capability and intentions of hostile individuals or organizations that may be engaged in espionage or sabotage or subversion or terrorism
counterintelligence: intelligence activities concerned with identifying and counteracting the threat to security posed by hostile intelligence organizations or by individuals engaged in espionage or sabotage or subversion or terrorism
hang glider: a glider resembling a large kite; the rider hangs from it while descending from a height