Authorities in Las Vegas says the investigation into the mass shooting shows no evidence of a conspiracy or a second gunman.

Ford is adding more than 816,000 vehicles in North America to the growing Takata air bag inflator recall.

The nation's highway safety watchdog says U.S. cars and trucks have about 85 million Takata air bag inflators in them that haven't been recalled.      Takata's inflators can explode with too much force and spew shrapnel into drivers and passengers.

After resisting for nearly a month, Chrysler has bowed to government demands and will expand a recall of driver's side air bag inflators across the nation. The automaker says it will recall nearly 2.9 million older cars and trucks in the U.S., as demanded by the National Highway Traffic Safety Administration.