The city of Cleveland doesn't think it's necessary to require police officers to wear body cameras while working off-duty security details, and has asked a federal judge to sign off on a new policy that says as much.

The city filed a motion Friday that says none of the 630 officers authorized to do off-duty work stepped forward to take part in a pilot program to test how requiring officers to do so would affect their moonlighting details. The lack of volunteers may have been because the leaders of Cleveland's largest police unions told its members, at the very least, to be wary of pilot programs.

The city is asking Chief U.S. District Judge Solomon Oliver to approve a policy saying the use of body cameras during secondary employment is recommended but not required.

The proposal is likely to be opposed by the team monitoring the city's progress under a settlement it reached with the Justice Department to reform the police department, reports.