Government of the Soviet Union
From 1967 to 1968, Korchilov attended the United Nations Interpretation and Translation School in Moscow which earned him a certificate majoring in simultaneous interpretation. Later in the spring of 1968, Korchilov was sent to work as a junior conference interpreter at the United Nations headquarters in New York City. It was during this assignment that he interpreted during delicate summit meetings between the Heads of State and Government of the Soviet Union and the United States.