Morale appears to be on the upswing at the Gainesville Police Department in the week since Chief Brian Kelly resigned, according to sources inside the force. The change in command, which followed an inquiry by city management that revealed widespread concerns within the department about Kelly’s leadership, has breathed new life into officers. But challenges remain as the department works to address other issues, such as pay, its relationship with the community it serves and, like other areas of government, budgetary constraints.