ron was linda ham's boss and a good manager. but what's always the first step in grief? denial. -i called ron and i said, "ron, let me just remind you, ok? we had a clear understanding that we are not gonna eliminate anything until the data has come in to definitively eliminate it." -to bring that out and dismiss it, you know, pre-emptively, i think speaks volumes. at the very least they had to acknowledge it. but it was acknowledging their own mistakes and that's hard to do. ♪ -each week there was a new trailer load of debris showed up, came right in this hangar through those doors, and it would be catalogued and then put out on the floor. i want to know what the debris is telling us, i want to know what the aerodynamics are telling us, and i want to know what the sensors are telling us. you follow the debris, what's it telling you? ♪ and if you follow the logic, you begin to see pieces that are telling you a story. as we were progressing through the left-wing reconstruction, you can see these burned tiles, this reinforced carbon-carbon, looks like it's been burned in a way