Scott Pelley is a 60 Minutes correspondent.

A 60 Minutes interview with Deepwater Horizon’s chief technician, Mike Williams, revealed a series of errors that led to the oil spill. CBS’ Scott Pelley on his “best interview ever.”

Nearly a decade after the 9/11 attacks, not one project has been finished at the World Trade Center site. This Sunday on CBS, watch 60 Minutes correspondent Scott Pelley take a trip to the seven-story pit.