In the linked article below, it seems that one of the Marines that Congresscritter Murtha bad mouthed when the Haditha events first came to light, took it personally. So personally, that he suing Congressman Murtha for libel and invasion of privacy.
Even though the Marines haven't been charged yet ... scratch that. ESPECIALLY because the Marine's haven't been charged yet, Murtha's comments were defamatory and cruel. This Marine is doing something about it.
Check out the story for more details.