Chaos roiled the Newsweek offices Monday with the firings of the editor-in-chief, his number two and three reporters — possibly in retaliation for their unfavorable coverage of the company. Johnathan Davis, the co-founder/CEO of Newsweek Media Group, ordered the firing of top editor Bob Roe, his deputy Ken Li and reporters Celeste Katz and Josh Saul, as well as Josh Keefe, a reporter for the International Business Times, a sister company, a source said.