Major PAL for this episode. From the previews, it looked like Lise was shot by the hit man, however it was the Narn who shot her. Also, this PAL got neutralized in River of Souls (which was shown before this episode) in which Garibaldi mentions that he and Lise are married.
Is it just me, or does anyone else think that Lyta has gotten the major shaft for the last year and a half? Sheridan couldn't have won the Shadow War and the war with Earth without her, yet she was moved to smaller quarters, ignored by the senior staff, and left unprotected financially after the Vorlons left, forcing her back to Psi Corps. To add insult to injury, nobody came to say goodbye when she left. Is it any wonder she feels the way she does?
Harvey I believe that is the whole point. This alienation is what making her take the actions she does and she has to leave. Her story will probably not be quite resolved when the series ends.
In MedLab after Lise has been shot, G'Kar says to Garibaldi, "If I could go back in time and let the bullet strike me ..." The bullet? It looked like a PPG shot to me.