You could get in rehearsals, pre-production, anything that would actually contribute to the understanding of how a film gets made. I actually find those things increase people's interest in a movie and like that better than worrying about showing the tricks behind the curtain.
I think a submarine is a very worthwhile weapon. I believe we can defend ourselves with submarines and all our troops back at home. This whole idea that we have to be in 130 countries and 900 bases. . . is an old-fashioned idea.