The Hemisphere: Ready for Alerts

The shortest distance from Russia to America's industrial heart lies across the North Pole and down through the expanse of Canada. Last week, to help guard this vital approach, four more zones of a coast-to-coast air-defense system went into operation along the Canadian-U.S. border.

On the U.S. side, Air Defense Identification Zones (ADIZes) are up to 535 miles deep; on the Canadian side (CADIZes) they are narrower and there is a gap in the prairie belt where the system is not yet in operation. Areas on both sides of the border are rigidly policed. Airmen planning to fly in them must...

Want the full story?

Subscribe Now

Subscribe
Subscribe

Get TIME the way you want it

  • One Week Digital Pass — $4.99
  • Monthly Pay-As-You-Go DIGITAL ACCESS$2.99
  • One Year ALL ACCESSJust $30!   Best Deal!
    Print Magazine + Digital Edition + Subscriber-only Content on TIME.com

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!