The ebon boy in the glittering cloak raced along the pulsing paths of the metroplex air traffic control computers. He ran unerringly, headed for a destination he had visited before. Up a flight of stairs and through a shining door he went making his way among the hierarchy of subsystems and past barriers as though they weren’t there. Reaching the command center at last, he dipped a hand into the data stream and left behind a command. Then he was gone, slipping out past countermeasures that never knew he was there.