A 5-year-old boy is dead after a hyperbaric chamber he was inside exploded at a medical facility Friday in Troy, Michigan, police and fire officials said.

Homeland Security Investigations (HSI) has arrested two illegal migrants who the agency says were running a drugs and narcotics operation in Maryland and Georgia.

A Howard University professor and former Miss Kansas contestant known for her “bright smile" and “zest for life" was among the victims in Wednesday’s midair collision between an Army helicopter and an American Airlines plane near Reagan National Airport.