missile silo – n. a very deep, underground launch station for a missile

ballistic – adj. describing something shot through the sky for great distances

decommissioned – v. to officially stop using (a ship, weapon, dam, etc.) : to remove (something) from service

grid – n. the system of providing electricity to large areas : examples : “He lives off the grid and uses only the power he makes himself.” If the grid goes down and there is no longer any power sources, will you be ready?”

generator – n. a device that uses a motor to produce electricity

battery – n. a device for storing energy or electricity

turbine – n. an engine with parts that spin because of air water or steam pressure

powder – n. something (as a food, medicine, or cosmetic) made in or changed to the form of a powder

high-definition – adj. having a very clear picture and a wide screen