This is the account of the passengers of United Flight 93, as told by their loved ones. Quite a few of them were slated to be on a later flight, but had arrived at the airport early and managed to switch to this flight. While we may never know what exactly went on in the plane and how things really played out, it remains that the passengers and crew on that plane were heroes. This was quite a difficult read as there are accounts of final phone calls made and goodbyes said. Many times, I could not read but a few pages, and sometimes, just a few paragraphs, before I had to put the book down for an emotional breather.