Former NYPD detectives John Walcott and Rich Volpe in the office of their attorney, David Worby. Walcott, battling leukemia, and Volpe, fighting kidney disease, are part of the class-action lawsuit against New York City and its contractors, claiming that they failed to protect workers from cancer-causing benzene and other hazardous chemicals. White Plains, N.Y., 10/30/2006.