Red Dawn

In Red Dawn, a city in Washington state awakens to the surreal sight of foreign paratroopers dropping from the sky – shockingly, the U.S. has been invaded and their hometown is the initial target. Quickly and without warning, the citizens find themselves prisoners and their town under enemy occupation. Determined to fight back, a group of young patriots seek refuge in the surrounding woods, training and reorganizing themselves into a guerilla group of fighters. Taking inspiration from their high school mascot, they call themselves the Wolverines, banding together to protect one another, liberate their town from its captors, and take back their freedom.

the official version from openroadfilms.com on February 24, 2012

In "Red Dawn," an American city awakens to the surreal sight of foreign paratroopers dropping from the sky. Quickly and without warning, the citizens find themselves prisoners and their town under enemy occupation. Determined to fight back, a group of young patriots seek refuge in the surrounding woods, training and reorganizing themselves into a guerilla group of fighters known as the Wolverines.

from mgm.com on August 28, 2010

A group of high schoolers band together to protect their town by a homeland invasion.