While America was still reeling from the terrorist attacks of 9/11, another potentially catastrophic but invisible threat followed just days later. Letters laced with anthrax and sent through the mail to targeted individuals became the first biological attack in U.S. history.

While many remember the frightening headlines warning of dangerous white powder letters which resulted in 5 deaths and many more sickened, the circumstances of how the attack was discovered and the harrowing events that followed, has gone largely unreported.

In this special APB Behind the Badge episode, we learn how the attack was carried out and how vital preparations by the U.S. Capitol Police for such an event, likely saved thousands of lives. The episode – Declassified: Inside the Anthrax Attack on America delves into declassified F ...