Well, they seem to have gotten all flakey. I never heard back, and when the NCWA contacts were talking to the people from the show, it was always "Oh, so-and-so's at lunch," or "We need to talk to our producers," or something. Maybe it was because they were informed that we would like to be compensated for powder/time/cannonballs. Maybe it's because they really wanted an 18th century naval gun on a naval carriage. (I know where they could get one, but it's in El Centro...)
So who knows? While it would be fun, I'm not devastated by their lack of response. I have other things I can be doing with my time.