Another concern has centered on emergency uses of vehicles during the hours covered by the program.

Our chief concern centered on the criteria established by the original search committee to choose a new commissioner.

Rather, the concerns centered on how his actions would hurt America and Americans, as they put it.

Since the release, most concerns have centered on bugs.

His main concern centered on individuals' need to provide gifts and the obligations to reciprocate them.

The Board's concern also centered around the difficulty of finding a more accurate surveying instrument.

One particular concern centred on the possible statistical implications of pension reforms.

Their concern centered on Ramage's drinking habits and whether he took responsibility for the crash.

Mostly, their concerns centered on how the country could protect itself against future terrorist attacks, so others did not have to experience their grief.

Concern has centered on the misery of small investors maimed in the tech wreckage.