Like in a spy novel, they decided to call themselves Dr. Jones and Mr. Yoshida so they could phone each other as many times as necessary from their respective countries the United States and Japan without revealing their real identities to telephone operators.
A policy document from over half a century ago lays out details of a secret Japan-U.S. pact signed by Prime Minister Eisaku Sato and President Richard Nixon allowing the United States to bring nuclear weapons to Okinawa Prefecture after it reverted to Japanese sovereignty in 1972.