81.   Other area campuses tightened security, but planned to allow the free flow of foot traffic.

82.   Other schools are also tightening security at their locker rooms.

83.   Police moved to tighten security around the Congress and the presidential palace.

84.   Police said they tightened security in Makati.

85.   Police immediately tightened security around both.

86.   Police are tightening security.

87.   Protesters, most of them supporting Bush, rallied outside, and police tightened security.

88.   Saturday, Pakistan tightened security around US missions and American-owned businesses.

89.   Secret Service agents said security was tightened even more than usual because of the war on terror.

90.   Security has been tightened at bases and military personnel have been warned to keep a low profile and wear civilian clothes when traveling in public.