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Witnesses on Everest: ‘We heard an avalanche’

Jonathan Fierro and Ed Wardle, a producer and cameraman with NBC's Peacock Productions, who were working on a project on Mount Everest when a deadly avalanche struck Friday morning, say the tragedy occurred at the beginning of the busiest season at the mountain

Jonathan Fierro and Ed Wardle, a producer and cameraman with NBC's Peacock Productions, who were working on a project on Mount Everest when a deadly avalanche struck Friday morning, say the tragedy occurred at the beginning of the busiest season at the mountain