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Eamonn Roderique Walker (born 12 June 1962) is an English actor. On television, he began in the BBC sitcom In Sickness and in Health (1985–1987), the ITV crime dramas The Bill (1988–1989) and Supply & Demand (1998), and the HBO series Oz (1997–2003), for which he won a CableACE Award. He led the ITV television film Othello (2001) and had a further role in the Fox series Justice (2006–2007). Since 2012, Walker has starred as Wallace Boden in the NBC drama Chicago Fire and its spinoffs. Wikipedia