ROCK HILL, S.C. – Deputies are asking for the public’s help in finding a missing man in Rock Hill who suffers from severe dementia, the York County Sheriff’s Office said. Michael Agard, 78, was last seen Saturday morning around 4 a.m. on the corner of Pinehill and Celanese Road. Agard is 6-feet tall and weighs 165 pounds. He has gray hair and severe dementia, the sheriff’s office said. Anyone who sees Agard or knows where he might be is asked to…