I would use i.e. here. Viz. and i.e. are similar, and their uses may overlap, but the theoretical distinction is that i.e is used to restate or clarify, while viz. is used to introduce a detailed account or a complete list. "This will be investigated by the appropriate law enforcement agency, i.e. the FBI." "Laws prohibiting the wearing of mismatched socks on Wednesdays are rigorously enfo