Jack Hayes, the director of the National Weather Service, stepped down Friday in response to an investigation that top officials at the weather service had misappropriated $43.8 million by giving bonuses and extensions to contractors without proper justification. The Office of the Inspector General for the Department of Commerce, which oversees NOAA, released the report on May 18, detailing an audit of nine contracts that include incentive pay for good work. The contracts have a maximum potential value of $1.6 billion. The investigators said there may be other contracts that provide additional awards from 2008, 2009 and 2010 but that...