I got a chance to name this character after a real person, a policeman named David Rossi who was the first guy to testify in the O.J. Simpson trial. I thought he got piled on by O.J. Simpson’s lawyers at the time. So I thought “Someday I’m gonna name a character after this guy.” He went up in his dress blue uniforms and testified for two days. And I thought “What integrity.” For two days, this guy just got beat up—and all he did was answer the phones—and it’s obvious the defense is just gonna beat this guy up and try to hang the LAPD over the fact that this ****in’ idiot murdered his wife. To me it was a joke. And so because of it, I named him after this guy, and he found out through surreptitious methods, and we became great friends. ’Cause he was so flattered that I had done that.

http://www.avclub.com/articles/joe-mantegna,26934/