scene to thoroughly document the accident site and gather factual information. we will be doing a more detailed documentation of the rail cars and the scene. we plan to interview the train crew and other personnel. we would like to interview passengers of the train. we will be conducting a site distance test. we'll be testing the signal system, the train control signals. we'll be testing the braking system and a detailed analysis instead of the cursory analysis that i mentioned earlier of the recorders. we'll be doing a very detailed download and analysis of those recorders. our mission is to find out not only what happened, but why it happened so that we can prevent it from happening again. that's really what we're here for. to learn from these things so that we can keep them from