Jumping in freezing temps is one thing, in high winds and freezing temps. On average it's so cold up there it's below -30 in Celsius and Fahrenheit.
https://www.cbc.ca/news/canada/nort...lane-carrying-10-goes-down-in-n-w-t-1.7070120
Wednesday night, Lavallee said a Royal Canadian Air Force CC-130 Hercules was on its way to the site from 17 Wing Winnipeg.
Search and rescue technicians parachuted in with supplies and equipment around 8:40 p.m., roughly eight hours after the plane crashed. They'd had to circle overhead for nearly two hours as wind gusts reached past 60 kilometres per hour
https://www.cbc.ca/news/canada/nort...lane-carrying-10-goes-down-in-n-w-t-1.7070120