Now, the chopper came into view, a grayish specter cast in silhouette by the radiant illumination of the soaring towers of lower Manhattan. The rhythmic thumping of the craft's rotors resounded softly against the lounge's floor-to-ceiling windows. Gordon recognized the chopper's configuration, that of an A.C. Plutocrat, a big helo with luxury accommodations, usually reserved for the corporate elite.