People with NASA experience. We have it fixed. The fuselage and fuel tanks are aerosol gel, plastic reinforced. No radar signature. The working components are all plastic.
Video cameras are mostly plastic.
The fuel is chemical, invented by Dino. When the chemicals are combined they don't give off much heat, but create a high pressure gas driving a plastic turbine engine. Kind of like a bath tub boat running on baking soda. CEO Don't use that illustration with the Department of Defense. Emphasize high tech.