University of Delaware student Meredith Lockwood  has lifeguarding in her DNA. Her father, Don Lockwood, was a Rehoboth Beach Patrol lifeguard from 1985-88 and after being a lifeguard elsewhere last year, Meredith followed him into the patrol this year. So during Wednesday’s Mid-Atlantic Regional Lifesaving Championships in Rehoboth, Meredith came to win. And have fun, of course. As she …