Sudden Explosion After Baltimore Train Derailment

After a trash truck hit a 47 car freight train two of the cars immediately caught fire.
1:24 | 05/29/13

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Transcript for Sudden Explosion After Baltimore Train Derailment
massive train derailment near baltimore. Authorities confirm the fire is now under control. But not before a violent explosion shredded buildings and jolted people up to half a mile away. Abc's david kerley shows us. Reporter: When the 15 car jumped the track, two of them immediately caught fire drawing onlookers who were surprised suddenly by this massive explosion. Back up. Reporter: That explosion only intensified the fire. Shook the building. Reporter: Windows shattered. Nearby warehouse walls shredded. Here it is again. When it went it knocked me down and my two other co-workers. Reporter: As a precaution people were told to stay 20 blocks away. Officials say it was a trash truck which carries dumpsters that hit the 47-car freight train. Two of the cars carrying acid burned into the night. Five hours since the derailment and firefighters just stopped pouring water on it. There's still smoke coming out of the two cars burning. These firefighters learned that the driver of that trash truck was one of their own, retired. He's in serious congress this morning. Meantime, the ntsb says it will now investigate how his truck was able to strike a train and cause such a dangerous explosion. For "good morning america," david kerley, abc news, rosedale, maryland.

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