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The following steps might reduce the likelihood of future attacks. But
each bears significant financial and social costs.



MEASURE                                 COST



Upgrade qualifications                  Salaries and
and training for airport                training costs
security agents



Restrict public access                  Crimps rights
to some commercial                      of travel and
centers and other areas                 assembly



Increase surveillance                   Infringement
of public places                        on individual
                                        privacy



Expand government                       Privacy and
authority on wiretaps                   political risks,
and other electronic                    toll on quality
snooping                                of life



Counter bioterrorism                    Training and
by increasing efforts                   funding for
at Centers for                          research,
Disease Control                         readiness



Greater vigilance on                    Salaries,
storage and transport                   training
of nuclear materials