"They're just good people to have around for the team, too. It obviously benefits me, but for everybody there's a benefit," Miller said. "Those guys are really knowledgeable, they love the sport and they've seen success at the highest level."
Carey and Kenney were coaches on Miller's breakaway personal team when he won his second overall title in 2008.
"It's designed to keep Bode inspired and also to keep him accountable," U.S. men's head coach Sasha Rearick said. "Both of those guys do an amazing job."
Miller's former roommate on the circuit, Erik Schlopy, is an assistant coach on the technical team, and Miller noted a transformation in experience among the staff.
"I can't speak highly enough of how far the team has come in the last 17 years since I first made the team," Miller said. "There's been times where I've been pretty down, and it's been a fun process to be a part of."
Miller will compete in his fifth Olympics in Sochi in February.
"I've been to four (Olympics) before and I don't think one more is going to do much to change anything at this point," Miller said. "I came back because I had the chance to. ... I'm doing it because I believe I can do it."
The 36-year-old Miller, whose young son and 5-year-old daughter are from previous relationships, recently celebrated his one-year wedding anniversary with Morgan. His time off also allowed him to drop 20 pounds during rehab.
All the changes helped Miller avoid thinking about retiring.
"I'm in a much more healthy place in general," he said. "Just motivation-wise, the balance in the rest of my life -- my fitness, my health, my body. Those are all things that make you want to retire. Right now all of those things are much better than they've been in the last 10 years. That's the biggest factor for me."
As Miller spoke, scores of European journalists stuck microphones in his face, at one point nearly toppling a nearby table. But Miller, who would once run from such a scene, kept his composure.
"You get better at every part of this," he said. "(The media attention) doesn't bother me as much as it used to. I wouldn't say it's your skin getting thicker, just maturity does different things to you."