After 9/11 Security Became Omnipresent In Washington, But Threats Are Different Now
After the attacks, barriers and thigh-high cement bollards sprouted up seemingly overnight in Washington, D.C. But new threats show the need for adaptability.
by Brian Naylor
Sep 11, 2021
2 minutes
After the 9/11 attacks 20 years ago, security officials in Washington, D.C., sprang into action. The Pentagon had been attacked, and it's thought that United Flight 93 that went down near Shanksville, Pa., was headed for the U.S. Capitol building.
Seemingly overnight, planters and thigh-high cement bollards sprouted from the sidewalks, and Jersey barriers lined the streets.
The measures changed how Americans access their government. And while there have been
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