The US Secret Service played a crucial role on September 11, 2001, with agents working to prevent attacks on US leadership. Following the attacks, agents scrambled to respond to the situation. Their efforts were part of a nationwide response to the events of that day.

Further details about the Secret Service's actions are available, highlighting the seen and unseen heroism of agents during this time. The events of September 11, 2001, led to a significant response from the Secret Service, with agents working to protect US leadership. More information can be found through the source, which provides a look at the Secret Service's response to the attacks.