Input (grade 8): Lavrentiy Beria, the head of the secret police organization NKVD (the predecessor of the KGB), used the Buran device to spy on the U.S., British, and French embassies in Moscow.
Output (grade 7): Glinsky 261 Lavrentiy Beria, head of the KGB then used Buran to spy on US, British and French embassies.