This isn't a great episode, but is pretty good and it really contributes quite a bit to the overall subplot of the upcoming Shadow war as well as the conspiracy within the government of Earth.
Babylon 5 is told that the new president's doctor is a danger to Earth and he MUST be stopped at all costs! In fact, despite him being an old man (the same guy, by the way, that played Socrates in BILL AND TED'S EXCELLENT ADVENTURE), they are told to shoot first and ask questions later!! This really makes no sense and why this is such an urgent order is odd to say the least. However, Sheridan's contacts within a growing resistance movement soon contact him and tell him it's imperative that the doctor escape because he can prove that the previous president was murdered and Clark was behind it!!! So, it's a race against time to try to find the doctor before the Earth Force security people do.
Solid writing, action and an interesting and exciting conclusion make this a very good episode.