Until youe inactive reserve obligation if fulfilled your not completely done with the military, your not in the military anymore either inactive reserves do not have IDs or access to post or the commessary. Your just a pool of civilians trained and ready to be involuntarily activated if we get into WWIII.
Electrical Technicians on the other hand, perform maintenance and repair on electronic devices. These devices include anything from a DVD player used to play movies to an MRI machine used by hospitals.
Electrical Instrumentation Technician I: An AS technology degree in instrumentation, computers, or electronics, or 24 college level semester units in instrumentation, computers or electronics. typical way to obtain these would be: Electrical Instrumentation Technician I: OR. Two years of experience in the operation, maintenance, and repair of industrial instrumentation, control or communication system components involving the application of physical, chemical, and electronic principles.