Since 9/11, what agency has been given the task of protecting the nation's transportation systems and ensuring freedom of movement?

Question

Quizplus · Accepted Answer

The Transportation Security Administration (TSA) was created in response to the terrorist attacks on September 11, 2001, and was given the task of protecting the nation's transportation systems, including aviation, rail, and mass transit systems. The TSA's mission is to ensure freedom of movement for people and commerce while also ensuring the security of those transportation systems.

Since 9/11, What Agency Has Been Given the Task of Protecting