Quotation

Here agents were taught basic trade craft: how to make surreptitious entries, blow safes, and steam letters open, according to Di Giacomo. "Many of the so-called teachers were actually safecrackers and other questionable types, but they really knew their business. Some of them had jail terms behind them before OSS picked them up." Di Giacomo admitted that she picked up a few tricks from these instructors, and after all these years she can still steam open a letter.