Washington (CNN) Relatives of victims who died in Boeing 737 Max crashes told Congress on Wednesday that the company made decisions that should be considered criminal and were driven by financial greed.

The wrenching testimony comes as Boeing has struggled not only to fix its workhorse jet but is dealing with intense scrutiny and criticism over its safety and training practices.

Paul Njoroge vividly and emotional described his family's final minutes on Ethiopian Airlines flight 302, one of two 737 Max crashes in the last year that together killed 346 people.

"My wife and mum-in-law knew they were going to die," Njoroge said. "They had to somehow comfort the children during those final moments, knowing they were all their last."

"It never leaves me that my family's flesh is there in Ethiopia, mixed with the soil, the jet fuel and pieces of the aircraft," he said.

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