National Politics & Government How Security Measures In Washington, D.C., Have Changed Since 9/11 4:34pm September 09, 2021 by Brian Naylor Politics National Security National Share URL copied to clipboard! Copyright 2021 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered National Grizzly bears are set to be reintroduced to the North Cascades by John Ryan Politics & Government World News Scotland's first minister resigns by Willem Marx 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate