in 2006 and 2007. we implemented changes to our people in terms of the skills and capabilities. we implemented changes to the training they get and expertise they develop. we've implementedded significant changes to all their operating practices, including the implementation of an operating management system that covers all of the company's operations. it has been a root and branch review top to bottom. >> my concern is having followed the alaska pipeline and texas city refinery disaster, those reforms haven't worked. what will be done differently this time than the last 60 days? has there been discussion on why reforms from the texas city and alaska pipeline hasn't worked? you know the information our