OWVL - ONE WAY VOICE LINK

OWVL - ONE WAY VOICE LINK Radio communications to agents, typically over Shortwave Radio frequencies. One example being NUMBERS STATIONS.

OXCART

OXCART - (Lockheed Aircraft Corporation, USA) the Lockheed A-12 reconnaissance aircraft was built for the CIA at the infamous 'Skunk Works' following a design by U-2 designer Clarence "Kelly" Johnson. As overflights of the Soviet Union were prohibited, with photo-reconnaissance satellites replacing them, the A-12 saw service over North Vietnam and North Korea. OXCART was cancelled in 1968.

 ABOVE: A row of A-12s. 

BELOW: Radar Cross-Section tests were conducted at Area 51

ONE-TIME PAD

ONE-TIME PAD
Secure message system for operatives. Allegedly unbreakable if used as instructed, produced in pairs. The operative is given one to use with a cipher key that only corresponds to the pair. So long as it is only used once and not duplicated it is mathematically unbreakable.

 ABOVE: KGB OTP CAPTURED BY MI5

BELOW: CIA OTP CAPTURED BY KGB