Four Rangers arrive on Babylon 5, preparing to begin their training. At least two of those Rangers are in for a valuable lesson before the episode is over. Meanwhile, Zack is targetted for extinction during a Downbelow power struggle. The venerable Turhan Bey makes his second Babylon 5 appearance, this time in the role of Turval. First telecast on February 18, 1998, "Learning Curve" was written by J. Michael Straczynski. ~ Hal Erickson, Rovi