Kelvin Sheppard is taking over the reins of the defense after helming the group of linebackers in different capacities in four years on staff. Now, he'll bring a new voice but similar philosophy ...

Glenn has mentored Sheppard for the last three seasons for the role, and as a result, the defense could look similar under ...

The Detroit Lions lost defensive back Carlton Davis III to the New England Patriots on Monday ... a force on new defensive coordinator Kelvin Sheppard's unit for years to come.