You know that NSA is all about secrecy and stuff. This is why they always redact declassified documents out of any sensitive information.
Just like this one: the Cryptologic Spectrum article named "The Russian Language Training Program" (pdf, 627kb).
Let's look at the page 3 there. Here is the snapshot with my red marks:
Marvelous, isn't it? In fact, the entire The Staff section look like a puzzle similar to the famous Einstein's challenge. It is quite solvable. Will spy for lulz, yeah.