Agreed, but this wasn't really about Agile methodology as much as the generic notion of fast iteration, which can certainly exist outside a specific agile regim

Agreed, but this wasn't really about Agile methodology as much as the generic notion of fast iteration, which can certainly exist outside a specific agile regimen. From my experience, if your government audience is not already familiar with a piece of jargon, then introducing it risks 1) distracting from what you're actually trying to communicate, 2) giving them a false sense of understanding that will later be unintentionally used as a bludgeon against you or others in some planning meeting (a slightly caricaturish example: "No! Sprints are two days, why are you doing two week sprints!?").