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.
The technician is an expert in techniques used to fabricate devices, skilled in the use of hand and power tools, and trained in the selection and use of appropriate materials. The O&P technician's domain is away from the exam room, in a lab or shop. They work with some of the most technologically advanced materials in the world, which must be lightweight but strong enough to accommodate the user.