There is no evidence of that in the code you posted - all it does regarding bookmarks is to delete them. It's not apparent what point that serves.
The proper way to modify font attributes and the like, especially when you're dealing with an entire document, is to redefine the Styles it uses or to define and apply an appropriate Style - not to use brute-force overriding of the existing Style definitions. Assuming your existing document is using Styles properly, that obviates any concerns regarding headers & footers.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

Yeah, that's all the original code should do is delete the bookmarks. I used bookmarks and cross referencing, Alt + F9, to generate my crazy pages with repetitive information.

Anyway, I'm ignorant on styles and VBA. Is there a simple way to keep the entire document locked down to Arial and black color?

For some reason, my headers and other areas end up defaulting to Calibri and gray sometimes. I edited the plain text control properties for each box to be black and Arial. But, this doesn't always hold true. It'll end up changing anyway.

Sorry. Really low skilled here with Word.