Hearing: Key safety item found in ‘junk drawer’ after Troy hyperbaric chamber death, officer says

The lead officer testified about responding to the "chaotic" scene and finding a crucial safety item for operating hyperbaric chambers, unused and in a "junk drawer" at the Oxford Center, after a 5-year-old boy died. Tamela Peterson, 58, of Brighton, Jeffrey Mosteller, 65, of Clinton Township, Gary Marken, 66, of Spring Arbor and Aleta Moffitt, 60, of Rochester Hills, were charged after Thomas Cooper, 5, was killed when the hyperbaric chamber he was receiving treatment in exploded at the Oxford Center in Troy on Jan. 31, 2025. The boy’s mother was also injured in the explosion. All four workers appeared in 52-4 District Court before Judge Maureen McGinnis on Tuesday, Dec. 2, 2025, for a continuation of their preliminary examinations. Here's testimony from Troy Detective Danielle Trigger, who was the officer in charge of this case.