Baltimore is no stranger to short-term police commissioners, but in a history that dates back a century and a half, we have never before had four of them in a single calendar year. But that’s where we’ll be once the latest commissioner is named likely later this month, now that we know Interim Commissioner Gary Tuggle isn’t getting the job: He has withdrawn his name from consideration to hold the post permanently. And it’s not just the turnover at the top — Kevin Davis, fired amid a crime surge; Darryl De Sousa, forced out after a federal indictment on tax charges; Mr. Tuggle, apparently unwanted by city leaders — that’s a sign of concern. Recent reports of confrontations among other high-ranking commanders in the department, including a chair thrown against a wall during a meeting and an incident outside the police union lodge, paint a picture of a department in turmoil. If you don’t believe us, ask T.J. Smith, the department’s spokesman for the last three years who resigned today because of the mudslinging and dysfunction in the department. We need strong leadership and a fresh start, and there is at least reason to hope that an outsider to the department can bring that.