The second episode of HBO's 'Hard Knocks' chronicling of Seattle Seahawks training camp and preseason had one very interesting nugget that remains an ongoing story for the Super Bowl champions. Former Detroit Lions cornerback Terrion Arnold, currently facing several felony robbery and kidnapping charges, tried out for the Seahawks at the team facility at the start of the week. AdvertisementAdvertisement AdvertisementAden Durde asked Mike Macdonald about Terrion ArnoldSeahawks defensive coordinator Aden Durde: "Is there anything on that guy in Detroit, the one they cut?" Seahawks head coach Mike Macdonald: "John's looking into it. Among those in attendance are Mike Macdonald and Aden Durde.