My favorite is page 8, where you will notice they have graciously left the position of the 11th and 13th on the page un-redacted. As you will notice the contents of the footnotes 11, 12, and 13 are redacted, but the existence of a 12th foot note is indisputable.
So, the question remains, why redact the position of the 12th foot note whilst the others remain free for terrorist to see? It can only mean that the position of the 12th footnote on page 8 is of grave and strategical importance for our national security! Handing over the position of foot note 12 to the public would cause irreparable damage to the nation. If we gave away its secrets the terrorist win. Bombs and Taliban everywhere. Thanks Obama.