How has 9/11 changed our physical world?
Traveling has become since 9/11 very tiring because there are many security checks in the airports around the world. This means travelers have to go to the airports much earlier than 9/11. The queues are much longer than before and travelers are more nervous during the traveling. The security industry ha s benefited from this new environment because a lot of investments in equipment and people have been made to make traveling safer. even though people make complain about this new setup, there has been no more attacks on US territory since 9/11.
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