Harrison, an outsider from New Orleans who became Baltimore’s top cop earlier this year, is rebuilding his command staff and has been looking nationally for talent to help him shift the department’s culture and institute federally mandated reforms under the consent decree. He introduced Wilson on Tuesday as a deputy commissioner in charge of the public integrity bureau and Michael Sullivan, the deputy police chief in Louisville, Kentucky, as the deputy commissioner in charge of the operations bureau. Both were to complete Harrison’s executive team of four deputy commissioners, three of whom are civilians.