"Avoid public buildings."
Episodes that deal with a mad bomber are always fun to watch, especially when the bomb blows up. Bombs force the show out of the formula of resorting to negotiation, and de-emphasize the humanity of the criminals behind their destructive intentions.
"I didn't take the shot."
"Fit For Duty," was one of those episodes where not shooting the bad guy right away actually made sense, as shooting him could potentially hurt the victim. In the case of this episode, the victim was a little baby, who had been kidnapped by a musician who was going through some fugue state.