The Royal Canadian Air Force has grounded its fleet of CH-148 Cyclone helicopters after one of them experienced a “severe bump” during a training flight near Halifax. Colonel Peter Allan, commander at 12 Wing Shearwater, says the pilot safely landed the naval chopper with no damage during a night flight earlier this month. The glitch prompted a freeze on flying as of March 12th, and the Air Force is investigating with the help of aircraft manufacturer Sikorsky. A spokesman from the Maritime Helicopter Project says he won’t have a definite time when the fleet will fly again until the root cause of the incident is determined.