Experienced IT Professional and Sysadmin

Been in the IT field for ~20 years. In the past held a DoD clearance, worked at Three Mile Island for a while, ran all the IT in a small office, offered professional services for Mobile Device Management products, etc. Currently researching browser technologies from the past 25 years and brushing up on my C skills to contribute a substantial amount of code to an old browser that needs it. Sysadmin, QA, and Security interest me, but my best skill is being academic. If you have a technology where you can't just plug in somebody off the street, would love to hear from you.