Kevin Sites is the embedded journalist who recently videotaped a Marine killing an injured (and apparently unarmed) person in a mosque. He has a blog (at http://www.kevinsites.net/
and via the kevinsites
feed here on LJ). You might be interested in his recent entry
in the form of an open letter to the Marine unit involved on that killing, how he came to capture it on video, and how he decided to handle the story and the video after the killing; it’s got more detail and a different perspective than the news reports I’ve read.