If you want serious facts and figures to support your presentation I would suggest a visit to Bzn, Lye, Ben and Odi and the homes of the Fin's and Viffer mates where you can chat face to face with the aircrew and engineers who currently operate the various platforms you will be showing nice piccies of
I am sure you will find plenty of "real" info at "the coalface" which should make for a very interesting presentation which no doubt would be very well received by their airships
Let us know how you get on
all spelling mistakes are "df" alcohol induced