The first time I looked at this pdf there were blocks of printed text all over the place that floated over the handwritten text. By floating over I mean literally covering the written text. After I read your comment I looked at it again and it was simply the handwritten text.

I'm not sure if my pdf reader confused things or the nsa has a special redirect for me. But the complete handwritten text is perfectly readable to me now. I'm not sure what I saw before, but it was odd...