News that over a million people are planning on breaking into the infamous government facility known as Area 51 would doubtlessly come as a surprise to those who were actually stationed there, many of whom were all too eager to leave.

Sorry, but your employee softball team is pretty lame compared to what Central Intelligence Agency employees were up to in 1963.

In most professions, all it takes to form an after-work bowling league is an overly long email chain and some beer money. As a declassified memo unearthed in CREST shows, in the CIA, it’s a lot more complicated. Like, “cover story and security briefing” complicated.