The "OETR" mistake is a fly in my theoretical ointment. Burckett should have known to type OER. Otherwise, I think the secretary was a source of info, perhaps unwittingly (as to their end-use).
For example, she probably was trying to remember all the old rumors and shop-talk, and came up with Stodges. But she got her years wrong, and Burckett used Stodges anyway.
At some point, I'll bet she was a source for some of the memo info. Too bad they couldn't have talked her into creating the forgeries herself, on an old IBM Selectric!
Those would have been much better than using the MS Word defaults!
If she forged them they would have been in proper military format.