The RTG and the plutonium dioxide then met for testing at DOE’s Idaho National Lab, a fortified defense lab replete with tanks, barbed wire, control towers, and heavily armed guards who follow visitors everywhere, even to the bathroom. Once the RTG was tested, it was shipped to Florida in a manner befitting a spy story. DOE and NASA sent it cross-country to Cape Kennedy in a covert but heavily armed convoy; in fact, DOE sent multiple convoys to the Cape—all but one containing decoy RTGs—to make it even harder for anyone trying to sabotage or pilfer the plutonium.
