The tip, police say, came in to a Tesla Inc. call center in Las Vegas. A distraught former employee had a gun -- and seemed ready to use it. The ex-worker’s name, the caller said, was Martin Tripp.
That June 20 warning set off a frantic search for Tripp, who had recently lost his job at Tesla’s sprawling factory near Reno, Nevada, where the company makes batteries for its electric cars.
