on duty

On-duty NYPD officers in upper Manhattan have been working to quell the motorbike menace for the past two years.

Another on-duty officer was in the vehicle at the time of the incident.

The young scout rose, for he was on-duty, but the long rollers on the lake forbade the going forth.

"A d——d ni-nice point to decide, when they're on-on duty," replied Phil.

You still have eleven hours and thirty minutes to go, out of your sixteen hours of actual on-duty trick.