Was the season 1 esp 9 a SiFi attempt to let us know something? For those who didn't watch or don't remember a space Nazi comes to the station with an immortality drug, the catch is you have to kill someone to make it. It ends with the Vorlons destroying her while telling the crew "You are not ready for immortality."
To be honest most of B5 seems to be a SiFi take on today's headlines, here hoping real life has as good an upswing after the bad guys got shoved into the light.
I watched this awesome show again and it is full of stuff several 17 in plain sight. the messages they drop are like wow. the dark versus the light. the propaganda, the hidden government agendas, the battles within our own government, the agencies with their own plans. Just wow watch the whole thing again it will blow you away.
Season 3 episode 19 is titled "Gray 17 is missing."
https://babylon5.fandom.com/wiki/Grey_17_is_Missing
I am really starting to wonder what J. Michael Straczynski knew as he wrote most of this show.