*The Yangtzee Kiang meets Deep Space Nine at the former coordinates of the wormhole, but their scans reveal no trace of either the wormhole or Gul Dukat's ship. When three Cardassian warships cross the border, Major Kira orders Chief O'Brien to establish a high energy thoron field before they get within sensor range, in order to keep the Cardassians from detecting the station's lack of defensive systems. *Source: Back of Card