Chuck, Morgan, Chuck and Sarah work together to take down Alexei Volkoff. Alex is by Casey's side as he recovers in the hospital, and Ellie gives birth. Join us for our discussion of the 13th episode of the fourth season of Chuck, Chuck Versus the Push Mix, which originally aired on January 31st, 2011. It was written by Rafe Judkins and Lauren LeFranc and directed by Peter Lauer.