11.   In Washington, the government has been working to strengthen security at home, build international support and mobilize military forces.

12.   Indeed, members of Congress from northern border states have repeatedly pointed to places like Nighthawk to emphasize the need to strengthen security.

13.   Many of the mayors who attended the emergency conference on short notice said they were strengthening security.

14.   Now, after the attack, the clinic has started a fund to strengthen its security, the Preterm Fund for Safe Passage.

15.   Some Valley leaders questioned why other ways could not be found to strengthen airport security in light of the existing shortage of patrol officers.

16.   Still, lawmakers said they understood the need to strengthen aviation security quickly to encourage Americans to fly.

17.   That has been the main issue holding up a bill to strengthen aviation security.

18.   That prompted voice-mail manufacturers and telecommunications managers to strengthen security.

19.   The agreeing sides will expand and deepen confidence-building measures in the military sphere in order to strengthen mutual security, and to strengthen regional and international stability.

20.   The best response, several computer security experts said, will be to strengthen the security of individual computers on the Internet.