It has to only be a military typewriter.
Blather will have his "expert" say that the forged documents "could have been produced" in 1972.
Then Blather will spend the next 59 minutes talking about how Bush is a traitor to the country because he coordinated with the Communists while the country was at war....oh that was Kerry....well, your get my point.
Then Blather will sit tight and wait for the issue to blow over.