>>8765747 (Q pb)
MK = CIA Technical Services Division
https://en.wikipedia.org/wiki/CIA_cryptonym
https://en.wikipedia.org/wiki/Technical_Services_Staff
Family Jewels (Central Intelligence Agency)
"Family Jewels" is the informal name used to refer to a set of reports that detail activities conducted by the United States Central Intelligence Agency. Considered illegal or inappropriate, these actions were conducted over the span of decades, from the 1950s to the mid-1970s.
https://www.cia.gov/library/readingroom/collection/family-jewels
https://nsarchive2.gwu.edu/NSAEBB/NSAEBB222/