DEATH TRACK  When a Scandinavian heavy-metal band claims to possess the ordnance to wage a war, no one takes them seriously...despite their ties to right-wing extremists. But then a band member is murdered, and the weapons stash proves authentic. A remote, deserted military base on the Norwegian border with Finland harbors a stockpile of firearms and nuclear devices from the Soviet era. With news of the cache spreading, rabid political and paramilitary groups vie to seize the weaponry. The U.S. has just one good move: send in Mack Bolan.   Tracking his enemies across the unforgiving Nordic landscape, Bolan blazes a hot path of destruction, even when the trail runs cold. But with so many competing interests, eliminating one threat gives rise to another. The frigid North is about to be blown off the map, unless Bolan can force the warmongers to face the music. And the Executioner's tune is almost always deadly.