After resisting 150 bombing runs by the Allies in the Second World War, the cisterns continued to be used by the Italian Air Force to hold aviation fuel.
The facility has already produced its first THeMIS vehicle for the Dutch government, part of a run of more than 100 such robots pledged by the Netherlands.
A Russian drone wounded two civilians in Romania on Friday, days after Lithuania detailed how Moscow is also steering Ukraine's drones onto allied soil.