"It's better than just staying in Nashville and running the same hills," he said.
There's gear strewn all over Fisher's house now as he figures out what to squeeze into a 35-pound duffel bag.
When they first heard about his plans, Fisher's kids said, "You've got some work to do, Dad." Some of his former colleagues with the Titans "thought I was crazy."
Fisher took part in an NFL coaches USO tour to Iraq two years ago. Bruschi had been disappointed he couldn't participate in a USO tour to Afghanistan and told league officials to keep him in mind for future projects. When he got the call a few months ago, "it was just something I couldn't pass up."