11.   Many of the changes also mark a shift in responsibility for security, which has traditionally been divided between the Port Authority and the airlines.

12.   San Franciscans elected Assemblyman Willie Brown as mayor, marking a shift away from the more conservative policies of incumbent Frank Jordan.

13.   That marks a shift from last year.

14.   The agreement, called historic by Prime Minister Tony Blair, marked a shift from traditional British reluctance even to consider any defense arrangements outside NATO.

15.   The battle between the poor residents and their industrial neighbor has marked a shift in the way once-lax government authorities respond to such hazards.

16.   The agreement marks a shift by Bankers Trust.

17.   The National Grid acquisitions, analysts say, mark a shift in the kind of mergers that will unfurl within the industry over the next few years.

18.   The rise of Microsoft marked the shift from centralized computers to the desktop PC.

19.   This interest marks a shift from the last decade, when, after wages, the big issues in collective bargaining were job security and preserving health insurance benefits.

20.   With Independence and the Constitution, the president and Congress took up the Indian question, marking a shift from regional conflicts to national policy.