Four people got a rare brain cancer. Their only known connection is a shuttered Army ammunition plant.

Three longtime Philadelphia police officers developed the same rare cancer, and the similarities in their cases were hard to ignore.

Three longtime Philadelphia police officers developed the same rare cancer, and the similarities in their cases were hard to ignore. They all had spent years working in the department’s narcotics unit. They all died of glioblastoma, an aggressive form of brain cancer, within years of each other.

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