Good evening. Tonight people the world over are asking the same question, how is it possible that a jumbo jet has disappeared without a trace . Tonight the search has expanded over a large area for a large aircraft, a boeing 777, among the safest ever made, this one with 239 souls on board. There were false alarms over the weekend, a fuel slick on the water, what looked like an aircraft door, but they did not pan out. And now because they have to chase down even the wildest possible theories, the search continues on sea and on land in case this aircraft went on flying even though it left no electronic trail behind. Tonight the search is being conducted by 10 nations, 34 planes. 48 vessels have been deployed in this. We begin our coverage tonight among our correspondents and experts domestically and overseas with nbcs tom costello. Tom, good evening. Reporter hi, brian. The mere fact that they have not found any trace of this plane is raising the possibility that they have been looking
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