1.  Airport authorities are moving fast to improve security following a series of bomb threats.

2.  An effort to improve security was sidetracked by budget problems.

3.  Everyone can play a part in improving the security of their neighborhood.

4.  Manufacturers have expended a lot of time and effort trying to improve computer security.

5.  The police are giving advice to householders on how to improve the security of their homes.

6.  They need to improve security here - anyone could just walk in.

7.  Together with the police everyone can play a part in improving the security of their neighborhood.

8.  Users and manufacturers have expended a lot of time and effort trying to find ways to improve computer security.

9.  Management need to explore ways of improving office security.

10.  The aim of the fence is to improve security at Park Royal.