He has been spotted showing off the terror group’s savagery in countless execution videos, some of which show him holding severed heads. Greene was assigned to the Detroit bureau in 2014, at the time when she was asked to probe Cuspert. But finally she left her husband in the US to be with Cuspert in war-torn Syria. After, she came back in the US and was arrested. She agreed to cooperate with authorities, pleading guilty to making false statements involving international terrorism. After being convicted for only two years she was released from prison in August 2016. It was the final but not for the authorities. They learned the hard lesson. In a statement, the FBI said now it had taken “several steps in a variety of areas to identify and reduce security vulnerabilities” like the ones seen in Greene’s case.