11.   Hoping to better track foreign visitors and keep out would-be terrorists, immigration officials are tightening student visa rules and proposing shorter U.S. trips for tourists and business travelers.

12.   Immigration officials on Monday tightened visa rules for foreign students and proposed new restrictions limiting the time a tourist or business person may stay in the United States.

13.   Local health officials have tightened oversight of meat sales in open-air markets and stores.

14.   Officials also tightened security precautions in Jakarta, where dozens of police were guarding the U.S. Embassy.

15.   Police officials tightened security Thursday around a temple in southern India following a dispute between two branches of the Hare Krishna religious community.

16.   Security officials have tightened enforcement of restrictions on independent information from flood areas.

17.   Since that time, officials have tightened building codes and created new civil defense systems, including the seismic alarm that sounded Thursday.

18.   South African officials Saturday tightened security aboard its naval vessel in yet another attempt to lure rebel leader Laurent Kabila to peace talks with Zairian President Mobutu Sese Seko.