Disaster_Accident

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Officials are seen at the scene of a leak from a crude oil pipeline on Tuesday, March 18, 2014, in Colerain Township, Ohio. A Colerain Township fire official said the leak has been contained and that there is no immediate danger to the public. Capt. Steve Conn told The Cincinnati Enquirer oil leaked into a creek and collected in a marshy wetland, and it wasn't clear whether it reached ponds and the Great Miami River. (AP Photo/The Cincinnati Enquirer, Gary Landers) MANDATORY CREDIT; NO SALES

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Officials prepare clean-up materials at the scene of a leak from a crude oil pipeline on Tuesday, March 18, 2014, in Colerain Township, Ohio. A Colerain Township fire official said the leak has been contained and that there is no immediate danger to the public. Capt. Steve Conn told The Cincinnati Enquirer oil leaked into a creek and collected in a marshy wetland, and it wasn't clear whether it reached ponds and the Great Miami River. (AP Photo/The Cincinnati Enquirer, Gary Landers) MANDATORY CREDIT; NO SALES

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In this photo provided by KOMO-TV, a car burns at the scene of a helicopter crash outside the KOMO-TV studios near the space needle in Seattle on Tuesday, March 18, 2014. The station says the helicopter was apparently coming in for a landing on its rooftop Tuesday morning when it possibly hit the side of the building and went down, hitting several vehicles on Broad Street. (AP Photo/KOMO-TV, Kelly Koopmans)

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In this photo provided by KOMO-TV, emergency personnel respond to the scene of a helicopter crash outside the KOMO-TV studios near the space needle in Seattle on Tuesday, March 18, 2014. The station says the helicopter was apparently coming in for a landing on its rooftop Tuesday morning when it possibly hit the side of the building and went down, hitting several vehicles on Broad Street. (AP Photo/KOMO-TV, Kelly Koopmans)

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In this image made from video provided by KOMO-TV, smoke rises from the scene of a news helicopter crash outside the KOMO-TV studios near the space needle in Seattle, Tuesday, March 18, 2014, in Seattle. The station says the copter was apparently coming in for a landing on its rooftop Tuesday morning when it possibly hit the side of the building and went down, hitting several vehicles. (AP Photo/Courtesy KOMO-TV) MANDATORY CREDIT

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In this image made from video provided by KOMO-TV, smoke rises from the scene of a news helicopter crash outside the KOMO-TV studios near the space needle in Seattle, Tuesday, March 18, 2014, in Seattle. The station says the copter was apparently coming in for a landing on its rooftop Tuesday morning when it possibly hit the side of the building and went down, hitting several vehicles. (AP Photo/Courtesy KOMO-TV) MANDATORY CREDIT

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In this photo provided by KOMO-TV, emergency personnel respond to the scene of a helicopter crash outside the KOMO-TV studios near the space needle in Seattle on Tuesday, March 18, 2014. The station says the helicopter was apparently coming in for a landing on its rooftop Tuesday morning when it possibly hit the side of the building and went down, hitting several vehicles on Broad Street. (AP Photo/KOMO-TV, Kelly Koopmans) MANDATORY CREDIT

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In this image made from video provided by KOMO-TV, smoke rises from the scene of a news helicopter crash outside the KOMO-TV studios near the space needle in Seattle, Tuesday, March 18, 2014, in Seattle. The station says the copter was apparently coming in for a landing on its rooftop Tuesday morning when it possibly hit the side of the building and went down, hitting several vehicles. (AP Photo/Courtesy KOMO-TV) MANDATORY CREDIT

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In this photo provided by KIRO- TV, smoke rises at the scene of a helicopter crash outside the KOMO-TV studios near the space needle in Seattle on Tuesday, March 18, 2014. The station says the helicopter was apparently coming in for a landing on its rooftop Tuesday morning when it possibly hit the side of the building and went down, hitting several vehicles on Broad Street. (AP Photo/KIRO-TV)

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In this photo provided by KOMO-TV, a car burns at the scene of a helicopter crash outside the KOMO-TV studios near the space needle in Seattle on Tuesday, March 18, 2014. The station says the helicopter was apparently coming in for a landing on its rooftop Tuesday morning when it possibly hit the side of the building and went down, hitting several vehicles on Broad Street. (AP Photo/KOMO-TV, Kelly Koopmans) MANDATORY CREDIT: KOMO-TV