From the website:
The invasion begins later this week. Fortress America is on its way to store shelves, and you can prepare by watching our new and exciting video trailer!
This updated version of Michael Gray's 1986 classic pits one player, in control of the beleaguered American forces, against up to three others, who team up to assault the U.S. on three fronts. Featuring beautifully crafted components (including over 300 detailed plastic figures), Fortress America thrusts players into a frightening geopolitical scenario in which diplomacy has failed, and World War III has begun.