David Dockery’s corner office gives him a wide view of downtown Gainesville, with its busy streets and other infrastructure that have provided him job security for the past decade. After all, as public works director, his job has called for helping to ensure paved streets, smooth sidewalks and synchronized traffic lights. But after a 25-year tenure, including 15 years in the city’s Environmental Services, the 51-year-old White County native said he is “really looking forward to the next phase of life.”