After the defeat of Nazi Germany in 1945, the Potsdam Agreement stipulated that Berlin would be occupied by the four major allied powers of World War II: the Soviet Union, the United States, the UK, and France. But the war’s end seemed to herald an even graver danger: a world split into two hostile camps, both armed with nuclear missiles. The East, with the centrally planned economies of the Soviet Union and its Warsaw Pact allies, faced the West, with the democratic, market-driven economies of the United States and its NATO allies. Nowhere was this tense rivalry more starkly depicted than in the divided city of Berlin, deep inside Communist East Germany.

The Army of South Vietnam (ARVNs) had a reputation for being corrupt and incompetent, and I noticed that the paratroops carried grease guns, along with other World War II‑era weapons. Since I wanted an extra one to send home, I thought I’d make them an offer. I took a walk to the ARVNs’ compound, but when I saw how careless they were about leaving their weapons lying around, a new plan began to take shape. If I tried to buy a grease gun but failed to close the deal, I would only draw attention to myself. Then, if one of the weapons should later go missing, things could get awkward. Better just to steal one.