TRURO, N.S. — The inquiry into the 2020 mass shooting in Nova Scotia is hearing today from a retired senior Mountie who has been granted special accommodations to ensure he is not re-traumatized by having to relive the tragic, 13-hour event. After almost 40 years of service, Staff Sgt. Al Carroll was one month shy of retiring on April 18, 2020, when he was called in to the detachment in Bible Hill, N.S., where he was among the first to learn that an active shooter was on the loose in nearby Port