With nearly wall-to-wall coverage of the September 11, 2001 attacks' tenth anniversary, the images from that day are being replayed over and over again. You can see old footage at the Internet Archive. And here are a few images from our readers from that day. And the Star-Ledger has an interesting interview with Leslie Robertson, who was the lead structural engineer on the World Trade Center project: "I didn’t think the towers would fall. As designed, the weight of the floors above where the planes had hit was being transferred around the holes to the columns below. But as I watched, fearing for all those still inside, a decade of work flashbacked across my mind."