KUOW's investigation into worker complaints about BNSF Railway's documents how the company has prioritized speed and profits over safety, with a history of retaliating against workers who report accidents, injuries and safety concerns. Railroad safety has come under public scrutiny now that trains are hauling millions of gallons of oil across North America. In the Northwest, BNSF carries the vast majority of the especially combustible Bakken crude from North Dakota and neighboring states. The railroad now moves nearly 20 oil trains per week through the Columbia River Gorge. The story of Curtis Rookaird, which our investigation and resulting documents confirm, illustrate how a BNSF Railway worker's insistence that government safety standards are followed -- even at the expense of speeding freight to its destination, led to his dismissal.