At the time I was a Fortran programmer and very good at it but had no idea how to program my new PC. Frank Collins, a DEF-A rep, and I decided to take an Assembly Language programming class from a Marine at Camp Butler on Okinawa. My computer had two 5 inch disc drives; on one was the program for the Assembly Language, on the other was the program I was writing. I ended up with a program similar to ‘pong’. it was a good introduction to programming on a PC.
Some time in our first spring on Okinawa Jan and I were enjoying swimming at the Kadena Marina that the Air Force recreation center managed. It was located just off the SW end of the runway on the East China Sea side of Okinawa. We were attempting to master wind surfing. Our attempts consisted of sailing with the wind out to the reef protecting the marina, jump into the water and swim back towing the windsurfer. After seeing out plight an observer, Slava Joukoff, gave us an offer we couldn’t refuse. “I’ll teach you how to windsurf, if you will take a scuba diving class from me”. We agreed and as a result learned very little about windsurfing and completed the basic and advanced scuba classes from him. Most of our free time together were spent scuba diving rather than windsurfing.
Slava was a Russian from Australia that worked for Voice of America. He was an interpreter. His group on Okinawa were tasked with receiving TV broadcasts beamed down to Eastern Russia, namely Vladivostok. Russia has 10 time zones and eastern Russia is 7 hours ahead of Moscow. The operation on Okinawa was to record and interpret any broadcast that may have some international significance. If necessary, the information would be on the US ambassador’s desk in Moscow with a response prior to the broadcast being seen in Moscow. An interesting side of diplomacy.
We signed up for Slava’s scuba class and went through about 2 weeks of training, both class work and water work and Jan and I became certified scuba divers. Slava said that I was the oldest student he ever had. He was sneaky, he tried to convince us to take the advanced course and we turned it down. Then he invited us to go on an evening dive and we accepted, and it turned into night dive. It was awesome since there are many more creatures out at night. After the dive, Slava told us that we had taken one of the requirements for the advanced course, so we signed up for it. Slava taught not only diving but how to survive in certain situations. 
Later during our diving adventures, we became associated with divers taught by other instructors that were only fair-weather divers. Jan and I really enjoyed night diving and found several dive sites we returned to on a regular basis.
Jan and I joined the ‘Reef Rovers’, the Kadena diving club that arranged weekend boat dives out of the Kadena Marina, to islands near Okinawa. Having wetsuits, fitted and purchased on Okinawa, diving became a year-round activity. We dove with Slava, 
who also organized dives from other Okinawan ports on fishing boats about once a month until we left Okinawa. Diving became our passion. Slava, his wife Leka, and their children lived on the base and had been there for about 10 years when we met them. An interesting side note was that he sent his children to Japanese schools even though he was permitted to send them to the American schools on base. They spoke Russian in the home, Japanese at school and English to everyone on base. These kids became tri-lingual.