Stacy Collins, who spent the 2021 season as Boise State's special teams coordinator, will fill the same role with the Nittany Lions.
Grant McDermott, a second-semester mechanical engineering major at Penn State, died suddenly on Tuesday, December 28. He was 19.
Lorig will serve as the Ducks' special teams coordinator and nickels coach.
As Sean Clifford's blindside blocker, Walker earned third-team All-Big Ten honors in both 2020 and 2021.
Hazel has been a key member of James Franklin's staff since the head coach arrived at Vanderbilt.
Luketa announced his decision shortly after Penn State's Outback Bowl loss to Arkansas.