Warren, in his second year with the Huskers, is the lone holdover from Bo Pelini's staff.
Warren said he and Mike Riley discovered they shared similar philosophies in leadership, accountability and discipline.
“And when you have a chance to meet with somebody in authority, which obviously was Coach Riley, you be genuine and you tell them who you are and what you believe in, and you hope it’s a match. And if it’s not, then you buck up and you do something else for your family and your lifestyle.
“But in this case, it was a match.”
Warren’s recruiting prowess impressed Riley, as well.
“I traveled around that first week after I got the job and was able to visit recruits,” Riley said. “Everybody wanted to know what was going to happen to Charlton Warren. … He’d made a good impression on parents and on the recruits.”
Warren also made an impression in his first year at Nebraska. The Huskers were fifth nationally in pass-efficiency defense and 32nd in passing yards allowed. Sophomore safety Nate Gerry emerged under Warren’s watch.
Warren spent nine seasons at Air Force, where he gained some experience as defensive coordinator. He joins Mark Banker and Hank Hughes as staff members with DC experience.
Prior to Nebraska
2012-13: Air Force (associate head coach/defensive coordinator/secondary)
2008-11: Air Force (co-defensive coordinator/secondary/recruiting coordinator)
2005-07: Air Force (secondary/recruiting coordinator)