NATO’s secretary general has warned Russia could launch an attack on the alliance within the next five years. Finland and Sweden, the group's newest members, are preparing in ways beyond military spending. As Canada strengthens ties with both nations, what lessons can we learn? CBC’s Emma Godmere visits bomb shelters, the Russian border and Arctic training grounds to see how Finns and Swedes are getting ready. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS Connect with