In 1980 at age thirty (when I was in business school) a class assignment was to create a vision board of what I wanted for my life . I made a drawing...
I awoke at dawn (-13 degrees, 30-40 knot gusts) to find a group of about eight pigeons in lee of our garage right up against the wall at ground level...
I'd think classified documents would be returned (by someone assigned to do it) to whatever secure sources they came from at the end of each working...