Disaster_Accident

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This Oct. 2, 2013 photo shows the scene of a fatal three-vehicle accident involving a church bus near Dandridge, Tenn. Investigators concluded, Monday, April 28, 2014, a blown tire caused the accident in which the bus crossed the Interstate 40 median and crash into an SUV and tractor-trailer, killing eight people and injuring 14. (AP Photo/Knoxville News Sentinel, Paul Efird)

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Tennessee Highway Patrol Col. Tracy Trott discusses the results of an investigation into a fatal church bus crash Monday, April, 28, 2014, in Knoxville, Tenn. The investigation concluded a blown tire caused the October 2, 2013, accident in which the bus crossed the Interstate 40 median and crash into an SUV and tractor-trailer, killing eight people and injuring 14. (AP Photo/Knoxville News Sentinel, Michael Patrick)

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Tennessee Highway Patrol Trooper Randall Massengill discusses the results of an investigation into a fatal church bus crash Monday, April, 28, 2014, in Knoxville, Tenn. The investigation concluded a blown tire caused the October 2, 2013, accident in which the bus crossed the Interstate 40 median and crash into an SUV and tractor-trailer, killing eight people and injuring 14. (AP Photo/Knoxville News Sentinel, Michael Patrick)

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Fourth Judicial District Attorney General James Dunn announces that no charges will be sought as a result of an investigation into a fatal church bus accident Monday, April, 28, 2014, in Knoxville, Tenn. The investigation concluded a blown tire caused the October 2, 2013, accident in which the bus crossed the Interstate 40 median and crash into an SUV and tractor-trailer, killing eight people and injuring 14. (AP Photo/Knoxville News Sentinel, Michael Patrick)

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The scene of a fatal three-vehicle accident involving a church bus is seen October 2, 2013, near Dandridge, Tenn. Investigators concluded, Monday, April 28, 2014, a blown tire caused the accident in which the bus crossed the Interstate 40 median and crash into an SUV and tractor-trailer, killing eight people and injuring 14. (AP Photo/Knoxville News Sentinel, Paul Efird)

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In this April 17, 2014 photo, Marie Satty, right, digs through the trash alongside the road with other people in search of empty plastic bottles to sell to a recycling center in Carrefour, Haiti. Haiti’s central government collects only about 40 percent of the capital’s garbage, leaving the rest to pile up in streets and gutters, causing flooding when the rainy season comes. (AP Photo/Dieu Nalio Chery)

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Bonny Dunn gestures while she describes watching a plane that spiraled down into San Pablo Bay on Monday, April 28, 2014, in Richmond, Calif., as Coast Guard vessels continue to search the waters for any remains of the plane or the pilot that went down Sunday evening. Dunn and a friend viewed the incident and called 911 to give authorities the location. The small plane Cessna 210 single engine plane spiraled straight down into the water after clipping another plane according to witnesses. (AP Photo/Bay Area News Group, Laura A. Oda)

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Coast Guard vessels continue to search the waters of San Pablo Bay on Monday, April 28, 2014, in Richmond, Calif. A federal transportation safety official arrived Monday in Northern California to investigate a collision between two small planes that sent one crashing into the San Francisco Bay. The collision occurred Sunday near the Richmond-San Rafael Bridge and involved a single-engine Cessna 210 and a single-engine Hawker Sea Fury TMK 20. (AP Photo/Bay Area News Group, Laura A. Oda)

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In this Sunday, April 27, 2014 photo, residents walk past damage in Mayflower, Ark., after a tornado struck the town. A tornado system ripped through several states in the central U.S. and left more than a dozen dead in a violent start to this year's storm season, officials said. (AP Photo/The Arkansas Democrat-Gazette, Melissa Sue Gerrits) ARKANSAS TIMES OUT; ARKANSAS BUSINESS OUT

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A trail of debris, bottom, leads along the path of a tornado-devastated neighborhood in Vilonia, Ark., Monday, April 28, 2014, after a tornado struck the town late Sunday. The most powerful twister this year carved an 80-mile path of destruction through suburbs north of the state capital of Little Rock, killing at least 16 people. (AP Photo/Danny Johnston)

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Two men stand in front of a destroyed house in Mayflower, Ark., Monday, April 28, 2014, after a tornado struck the town late Sunday. A tornado system ripped through several states in the central U.S. and left at least 17 dead in a violent start to this year's storm season, officials said. (AP Photo/Danny Johnston)

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People walk between two destroyed houses in Mayflower, Ark., Monday, April 28, 2014, after a tornado struck the town late Sunday. A tornado system ripped through several states in the central U.S. and left at least 17 dead in a violent start to this year's storm season, officials said. (AP Photo/Danny Johnston)

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A row of lightly damages houses, top, face destroyed homes in a Vilonia, Ark., neighborhood Monday, April 28, 2014 after a tornado struck the town late Sunday, killing at least 16 people. (AP Photo/Danny Johnston)

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People walk between two destroyed houses in Mayflower, Ark., Monday, April 28, 2014, after a tornado struck the town late Sunday. A tornado system ripped through several states in the central U.S. and left at least 17 dead in a violent start to this year's storm season, officials said. (AP Photo/Danny Johnston)

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Homes and businesses are wrecked in downton Vilonia, Ark., Monday, April 28, 2014 after a tornado struck the town late Sunday. The most powerful twister this year carved an 80-mile path of destruction through suburbs north of the state capital of Little Rock, killing at least 16 people. (AP Photo/Danny Johnston)

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FILE - In this Wednesday, April 16, 2014 file photo, an excavator capable of floating on water is used to search through mud and debris that hit the community of Oso, Wash. Combing through fallen trees, wrecked homes and other debris, officials spent nearly five weeks looking for bodies at the site of the March 22 Oso mudslide. On Monday, April 28, 2014, officials announced they would no longer be actively looking for bodies. The task now switches to clearing debris from the area. A total of 41 bodies have been recovered. Two people remain missing. (AP Photo/Ted S. Warren, File)