Vultures in the SkyThe journey of the Mexico City bound Pullman seems ill fated from the outset what with the engine troubles and the threat of an impending railway strike but no one aboard expects the terror that will descend upon the luxury train between Laredo and its destination. First a man dies as the vehicle passes through a dark tunnel and then, just as United States Customs Agent Hugh Rennert begins to investigate, the train comes to a screeching halt in the