United States of Secrets, FRONTLINE’s two-part investigation of the National Security Agency’s surveillance activities post-9/11, has been honored with a Peabody Award for excellence in documentary filmmaking. Rain Media produced Part Two of this series, examining how Silicon Valley feeds the NSA’s global surveillance dragnet.

“With extensive, candid interviews from both critics and defenders, FRONTLINE provided a great public service, revealing in clear, comprehensible detail how the U.S. government in its post-9/11 zeal came to monitor and collect the communications of millions of people around the world – and here at home – and the lengths to which officials have gone to hide the massive surveillance from the public,” said the announcement on the Peabody Awards website.

The Peabody Award for United States of Secrets will be presented on May 31, 2015.