Safety protocols from the National Fire Protection Association and the manufacturer of the hyperbaric chamber were "completely disregarded" at the time of the boy's death, Michigan Attorney General Dana Nessel said. ????? ???????  

The chamber contained 100% oxygen, making it extremely flammable, Lt. Keith Young of the Detroit Fire Department said at the time. ????????????  

Three people have been charged with second-degree murder after a 5-year-old boy was killed when a hyperbaric chamber exploded at a medical facility in Michigan earlier this year, officials announced Tuesday. ?????  

The Bureau of Labor Statistics is expected Tuesday morning to release a report on how many jobs are open in the economy, which could provide another clue about the strength of economy amid the new recession concerns. An inflation report is expected Wednesday. ????? ???????  

In response to a question later on Sunday about his reluctance to rule out a recession, Trump said: "I tell you what, of course you hesitate. Who knows?" ????????????