(((rio))) There is a type of magnetism to information regarding some things, isn't there? Someone who has been traumatized needs to go over and over and over the event, to work through it, to try and make sense out of it, and to find new information that might "make it all better." IMO.

You might try making a list of things to do prior to reading any such material. This might not keep you from revisiting the event, but it will help you feel better and in more control when you do so? Make sure you ground yourself first. Have a mantra or even a note to read that says, This isn't happening now. I am safe. I am just sitting here reading. That will help you stay in the present and not flashback.

I hope you can stop minimizing your "minimal involvement" in the event. It doesn't matter where you were at the time, how close or far or whether you were in any real danger or not. The fact that it traumatized you is what you need to focus on. The sooner you get help with this the less long-range effect it will have on your life.