December 1979, a large group of teachers on the base took an organized tour of Southeast Asia over Christmas break. The day after we arrived in Hong Kong nearly everyone in the group became very ill, and the hotel doctor ordered bed rest. Since I was not ill, I wandered around snapping photos and rode the ferry to the other side of the harbor. Despite the mass of people on the streets, I felt safe.
I am sure our group would have seen more of Hong Kong if the "bug" had not grounded so many.