11.   Even ardent supporters of the councils say that after the initial rush to decentralize, City Hall oversight is a needed course correction.

12.   Even before his new office was ready, Ford was sitting down with environmentalists, asking for advice and making course corrections.

13.   For example, if a sensor determines the need for a course correction, the operating system fires the proper thruster at precisely the right time.

14.   Is the process of collective course correction ended now?

15.   It has involved lots of side trips and course corrections.

16.   No course correction was required and the American plane landed safely.

17.   Only last-minute course corrections will even begin to bring it toward Earth, they say.

18.   Since then, however, Gore has made a rhetorical course correction.

19.   Since then, however, the vice president has made a rhetorical course correction.

20.   The craft has already refined its aim with a final course correction.