Popular Mechanics (South Africa)
Security in numbers
The rise in cyber crime, and how to combat it.
The IAF operates out of 23 checkpoints. Most have airstrips, but at some the landing site is a river or bog. Two race segments are notorious for requiring rescues, meaning improvised landings: Shaktoolik to Koyuk (Norton Bay) and Rohn to Nikolai, where low snow and ground storms cause injuries.