before today when it started and they were worried about the speeds as you are approaching curves, i would think unless the black box has the answer on it and it could with the cameras and the recordings and every touch to the controls being recorded on a modern train, they may know right away, but the next step is the testing that was done and what they ran over the tracks and really what speeds they tested the curves a. >> 78 passengers and five crew members and multiple fatalities we are being told. a lot of injuries as well. they are dealing with the passengers who were injured and many of them seriously. let's get back to seat peter. there were almost certainly cameras on board that will have