1.   Vogle stayed to monitor the radio while the rest of us grabbed cameras and headed for different destinations.

2.   Changing battle fronts can mean relief workers must quickly deliver food and flee instead of staying to monitor who gets the aid.

3.   European observers and alliance troops stayed to monitor the implementation of the peace process.

4.   European observers and alliance troops have stayed to monitor the implementation of the peace process.

5.   European observers and NATO troops stayed to monitor the implementation of the peace process.