Captain Rick Henke and Sergeant William Mudd step down as Eric Holder says Justice Department is prepared to close down entire police force if necessaryThe second-highest ranking commander in the beleaguered police department of Ferguson, Missouri, was one of two veteran officers to resign on Friday over racist emails uncovered by federal investigators.Captain Rick Henke stepped down from his job together with Sergeant William Mudd, a fellow long-serving officer who was awarded the Medal of Valor more than 20 years ago, a spokesperson for the city confirmed on Friday.