Uber defends driver scrutiny in wake of shooting

Uber said it was devastated by a deadly shooting spree by one of its drivers but had no plans to change its background check methods. In a phone briefing with reporters, Uber expressed confidence in how well it probes whether aspiring drivers have pasts that signal trouble ahead. Uber's chief security officer Joe Sullivan said the ride-sharing company was "devastated" and has been working "around the clock" with police since Saturday night's killing spree in Kalamazoo in the US state of Michigan