. >> the kids on the bus don't know it yet, but their driver, 55-year-old martha thompson has a blood alcohol level of 0.15, almost twice the legal limit. >> the first time we really realized there was something wrong with the bus driver was when she just went straight through the stop sign, and she didn't stop. she stopped right in the middle of traffic, and one of the students had to go up and help her shift and back up so that we could get out of the way of traffic. >> many of the children on the bus are becoming frightened, especially some of the younger kids. several of the older students gather at the back of the bus to discuss how they should handle the situation. >> the big kids were talking and wondering what do we need to do to keep them calm because we don't want to tell them what is going on and have them get worked up. >> we didn't know if she was drunk or if there was like -- she took the wrong medicine. we didn't know what was wrong with her. >> but when thompson neglects to drop off two students, the situation goes from bad to worse. >> you passed the turn. >> what tur