Night vision and low level light viewing devices, namely, night vision monoculars, night vision binoculars, night vision quadrulars, night vision spotting scopes, night vision rifle scopes; night vision and low level light viewing devices of any size or shape, namely, digital cameras of any type; vacuum electronic devices, namely, image intensifier tubes, traveling wave tubes, traveling wave tube amplifiers, microwave power modules, power vacuum tubes, namely, triodes and tetrodes; and power supply devices used to power such vacuum electron devices