Marine Force One. A special detachment of the Marine Corps whose prowess in combat and specialized training sets them apart from the average grunt. They charge where others retreat, and succeed where others fail. They are the best America’s got.   In the deserts of Iraq, there’s trouble under the blistering sun. Using an overland black-market route that stretches from Germany to Iraq, extremist forces have gathered materials to create a new weapon of devastation. It’s a hybrid nuclear warhead that needs no missile—it can be fired from artillery. And it could cast a radioactive cloud over the entire Middle East.   Now, Major David Saxon and the warriors of Marine Force One must plunge into the heart of enemy territory, and cut the terrorist supply line down to size.