Mike Humphreys didn't know much about buses when he joined Metro Transit on Aug. 30, 1979. But after a decade as a cleaner he'd learned enough to "turn wrenches" as a mechanic technician. Humphreys started his career at the old North Side Garage and also spent time at the Nicollet and Snelling garages and the St. Paul Overhaul Base. Humphreys spent the end of his career at Nicollet Garage, retiring on Jan. 4, 2013. In retirement, Humphreys plans to spend time with his dog, repair his old motorcycle and travel Minnesota searching for artifacts.