81.   Part of the price for heightened security was long waits.

82.   Pena, citing the last two instances of heightened security, predicted that ticket prices would not be affected by the measures.

83.   Park Police placed concrete barriers around the Washington Monument Saturday because of heightened security concerns.

84.   President Bush and Congress must carefully balance the need for heightened security with the need to protect the constitutional rights of Americans.

85.   PILOTS TIGHTEN SECURITY ON PLANES As federal lawmakers consider a union proposal to allow pilots to carry guns, individual pilots have already adopted their own heightened security measures.

86.   Reserve extra time for departure, as heightened security at the airport will mean longer lines to check in and to clear security.

87.   School buses, after experiencing long waits in the first weeks of heightened security, are now allowed to go to the head of line, reducing delays.

88.   Rumors that North Korean security officers were circling the South Korean Embassy added to the alarm in the Chinese capital and led to the heightened security.

89.   Since not every site can be safeguarded, heightened security may merely serve to point terrorists toward more accessible targets.

90.   Since the Aden bombing, U.S. forces in the area have been on heightened security alert.