Overview: VICE News meets a guy who flies drones over coal mines looking for violations. Trump heads to Indiana to speak about tax reform on the same day that the 'Big Six' tax negotiators will unveil their broad-brushstrokes proposal for overhauling the tax code. U.S. secretary of Defense James Mattis arrives in Kabul, robotic pets are being used in senior living homes to bring joy to patients. And Twitter has a new 280 character limit.