DEEP SPACE NINE: "The Assign... " - REV. 09/12/96 - ACT FOUR 40. 36 CONTINUED: O'BRIEN (Cont'd) ... the systems are just slightly off spec. (reassuring himself) So far, none of these alterations appear to pose a threat to the station. But Sisko is certainly not satisfied. SISKO So far. But this might be just the tip of a very large and dangerous iceberg. O'Brien shifts uncomfortably, he wants so very much to simply tell everyone. SISKO Is there any way to trace how this was done, and by whom? ODO It has to be someone familiar with the station's systems. O'Brien catches Sisko looking at him. He glances at Odo, who is also watching him. DAX Maybe someone who worked on the station under the Cardassians... ODO I'm running extensive security checks on all recent visitors, but so far, I haven't found anything. DAX It could be someone who's been on the station a long time... someone with a lot of access... maybe even someone on the maintenance crew. Sisko looks at O'Brien -- "well?" O'Brien remains silent. SISKO Chief? O'BRIEN Yes.