Last week's amphibious invasion of Incheon completely surprised the North Koreans, and there are now thousands of UN troops deep in their rear and their logistic system is totally compromised; on top of that, as this week begins in the south, the UN forces begin breaking out of the Pusan Perimeter, first in a trickle, but by the end of the week in a huge torrent of force, running through, around, and over the North Korean forces.