This takes place in November 2259.
Just after Delenn and Lenir enter the Quarrantine zone, a tall Markab walks away from camera. You can see his mask splitting at the back of his neck.
While in Medlab, Dr. Franklin crosses the room to speak to the Markab doctor about test results. He leans on a panel where a sign seems to be labeled "SECURITY LOCCOUT". Upon close examination, the futuristic font used has a "K" without the vertical left half of the letter, making it appear as a "C".