trooper greg shipley, we want to thank you for taking time with us and bringing us up to te. we want to find more information and hopefully we'll talk with you as the story uolds again. as the trooper mentioned it's happened on the northbound side. what we did find out is this is a charter bus with pants s and students aboard and some are still waiting to be extra indicated. >> again, we're looking at traffic backed up in both directions on the beltway and stopped northbound on i-270 and moving slowly in the other direction, southbound i-270 as well. >>> initially we had heard with oscar garcia that they were treating as many as 10 to 15 parents some with life-threatening injuries. you have maryland state police, you have mtgomery county police, you have montgomery county fire and rescue there, several ambulances we have seen so far. you want to stay clear of th area. again, this bus shortly after 4:00 rolled down off of a sky ramp at 270. this is the spur here. went down a slope, a grassy tree-filled slope, if you will. it doesn't appear, although i can't say for sure, that