"Bonzo" is Knut Haukelid, another Resistance operative, who is heading up the
operation to sink the ferry. Through Skinnarland, Haukelid is passing on what
he's heard from one of the partisans' most valuable contacts inside the plant,
Kjell Nielsen, Vemork's transport engineer. Nielsen believes the amount of
useful heavy water the Germans would be able to secure from the Norwegian
stocks is not worth the inevitable reprisals on locals. As the transfer of the
heavy water is set to begin in three days, Skinnarland requests an immediate
response from London.