A report was just released from NASA with more details on the Columbia accident. It's 400 pages long and can be downloaded as a .pdf file. I've only skimmed through it so far, but it looks quite interesting. There are a lot of photos of cockpit debris as well as some photos of parts of the astronauts suits. Nothing gory or anything (at least not that I saw yet), but just be aware that it could be kind of disturbing to read some of the details of the accident. It seems that the astronauts did realize that something was wrong and were troubleshooting the problems. The cabin broke up so fast that they didn't have a chance to close their visors either. Not that it would matter, what could they have done anyway?