Other mistake: After AD Skinner is finished being interviewed by the police, Mulder asks him about why he would employ the services of a prostitute. Skinner looks at him in shock and Mulder says "You didn't know she was a prostitute did you?" I find it hard to believe that at no point in the interview did the police not mention to Skinner the dead woman he woke up next to after spending the night with her was a prostitute.
Other mistake: It seems that the first round fired by the hit squad destroys the camera or its power supply unit, because the satellite transmission is interrupted exactly at the moment the squad enters the train car. However, the members of the squad firstly shoot in the glass and then at the doctors.