A former vice president at Bethesda-based Digital Management Inc. has joined Metters Inc.'s c-suite, the McLean-based government contractor recently announced. Robert Rosenberger will serve as chief operating officer at Metters, overseeing all program operations and business growth initiatives. While at DMI for about a year, Rosenberger served as VP of Defense Information Systems Agency operations, according to his LinkedIn profile. Prior to that, he served as a senior vice president at NCI Information…