A severe blizzard forced Canada to delay for 24 hours until Thursday an advanced "stealth" cruise missile test, which defense experts say is crucial for the eventual production of the weapon in the United States.

The missile, which incorporates top secret stealth technology designed to make it nearly invisible to enemy radar, was to make its debut Wednesday outside the United States during a 1,500-mile flight over the Northwest Territories, Alberta and British Columbia. Throughout its four-hour journey, the missile will remain attached to an American B-52 bomber.