“Today was one of the worst days,” says Chase Sinclair, who was close friends with Umpherville. Umpherville died in hospital weeks after being declared brain dead following a cardiac arrest. Forensic pathologist Shaun Ladham had testified Umpherville’s cardiac death was in part caused by an obstructed airway from body positioning and drug use. Get daily National news Get daily Canada news delivered to your inbox so you'll never miss the day's top stories. Sinclair believes there are gaps in the system and that an independent opinion is missing from the inquest.