Four former drone operators who are speaking out against the U.S. military’s ongoing targeted killing program—and risking federal prosecution for doing so—appeared on Democracy Now! Friday morning, alongside renowned human rights attorney Jesselyn Radack, for their first extended interview on air.

“We have seen the abuse firsthand, and we are horrified,” former Air Force Staff Sgt. Brandon Bryant said at a press conference Thursday.

As Common Dreams reported earlier this week, the Air Force pilots-turned-whistleblowers issued an open letter to President Barack Obama warning that the drone program “is one of the most devastating driving forces for terrorism and destabilization around the world.”

“We witnessed gross waste, mismanagement, abuses of power, and our country’s leaders lying publicly about the effectiveness of the drone program,” the operators wrote in their letter. “We cannot sit silently by and witness tragedies like the attacks in Paris, knowing the devastating effects the drone program has overseas and at home.”

Watch their interviews below: