"We had the legacy of the Kingdome, and while there were a lot of things that we were working to improve on that building, there were a number of things they held dear," Murphy says. "The noise and the home-field advantage was one of them. So we worked real hard to get fans on top of the action. And then (Seahawks owner) Paul Allen had very fond memories of going into (the University of Washington's) Husky Stadium as a kid and encouraged us at some of our first meetings to go out there and look at what made Husky special. He wanted to make sure the fans were covered. At first he wanted natural grass so he wanted an open roof. As we started looking at it, what makes it loud is that roof."