21.   He takes a train journey to Hattiesburg with his mother, to help her track down the grave of her father, a suicide.

22.   Hi-Tech tracks down the source of the knockoffs and makes undercover purchases to get enough evidence to obtain an order to seize the goods.

23.   Hospital staff members have been helping him look up phone numbers as he calls his insurance company and tracks down a place to live temporarily.

24.   His presence is felt every time a Ghanaian customs inspector frisks a smuggler or an American bail enforcement officer tracks down a criminal who has skipped town.

25.   In Durban, a group called the Cleaners tracks down known criminals and maims them.

26.   In his office last month he displayed a poster intended to help track down delinquent parents.

27.   In his travels, Windhom spots the lonely barns and tracks down the owners.

28.   In that and other cases, officials said cooperation with the Palestinian forces had helped track down those responsible.

29.   Jordan injured his back on Monday fielding a ball on the warning track down the left-field line.

30.   Nationwide, telephone companies and government agencies are designing new ways to defend against hackers and track down criminals who do breach the networks.