From TV Guide:
For Episode 11, "Internal Displacement":
"C.J. has to contain a potentially embarrassing rumor about Bartlet's son-in-law, while also helping to diffuse tensions between Russia and China and monitoring deteriorating conditions in the Sudan.
Cast: Allison Janney, Bradley Whitford, NiCole Robinson, Joshua Malina. Mary McCormack, Kristin Chenoweth, Jimmy Smits"
For Episode 12, "Duck and Cover"
"As a potentially deadly crisis at a nuclear power plant throws the White House into a state of emergency, Vinick and Santos (Alan Alda, Jimmy Smits) struggle with the political fallout on their own campaigns.
Cast: Martin Sheen, Allison Janney, Bradley Whitford, Janel Moloney, Joshua Malina, Mary McCormack, Jimmy Smits, Alan Alda"