4 charged in death of 5-year-old boy in hyperbaric chamber explosion

Four people have been charged in the death of a 5-year-old boy who was killed inside a pressurized oxygen chamber that exploded at a suburban Detroit medical facility.

​ Four people have been charged in the death of a 5-year-old boy who was killed inside a pressurized oxygen chamber that exploded at a suburban Detroit medical facility. Read More Breaking News, Latest News and Videos | CNN