four people and injured dozens. >> another source says fatigue is a factor that is being investigated. confirming that. investigators are at the crash site today looking at the train's brake system to see if there might have been some sort of failure or not. we have more on this developing story next hour with wolf blitzer. >> all right. it was a horrible heinous crime. an acid attack that almost blinded this man. the bolshoi ballet's artistic director. now his that's correctors have found out how much time they'll be spending behind bars. people don't have to think about where their electricity comes from. they flip the switch-- and the light comes on. it's our job to make sure that it does. using natural gas this power plant can produce enough energy for about 600,000 homes. generating electricity that's cleaner and reliable, with fewer emissions-- it matters.