because for 200 years, we've been helping ideas move from ambion to achievement. and the next great idea could be yours. ♪ >>> now an update on the horrifying crash that killed four veterans at a texas parade last week. federal officials say video footage shows the truck carrying the veterans tried to cross the rail tracks while the warning lights were, indeed, on. a vigil was held last night for those killed when the train slammed into that truck. many witnesses to the crash are still in shock. >> it made me cry. i mean, i know what they went throu through, and it just -- like i said, i was at a loss for words. i didn't know what to say. i didn't know what to do. >> anybody that has any kind of decency should be feeling somber about this, because it was a very bad tragedy. they went over there, fought or four country, dodged bullets and this. something that was supposed to be something really good for them and it turned horrible. >> investigators are trying to determine who is responsible for the crash. >>> rescue crews have found a man's body in the gulf of mexi