Dean Pees is coming out of retirement to join Arthur Smith's coaching staff with the Atlanta Falcons as the team's new defensive coordinator, a source confirmed to ESPN on Friday.
NFL Network was the first to report the move.
Pees' second retirement last just more than a year after he walked away from the Tennessee Titans following the 2020 season.
He has 47 years of coaching experience, including 16 NFL seasons.
Pees, 71, retired for the first time after the 2018 season when he left after six seasons with the Baltimore Ravens.