Radio: How US national security changed after 9/11

https://digital-stage.newsnationnow.com/wp-content/uploads/sites/108/2021/09/9-11-SECURITY-RADIO-EDIT.mp3

In the wake of the Sept. 11 terrorist attacks, America hardened. Barriers and bollards sprouted up, surveillance cameras captured our daily lives and we learned if we see something, to say something.