Information/MinutesLinks Drone vs. Helicopter - An Unsuspected Danger 27 Nov 2017 Prevention video, produced by La Chamoniarde (Society for prevention and mountain rescue) in Chamonix, France (external links). Links Drone vs. Helicopter Prevention Video (external link to youtu.be) La Chamoniarde Website (external link to www.chamoniarde.com)
(external link to youtu.be)
(external link to www.chamoniarde.com)
