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Programming notes

*** Thursday’s “The Daily Rundown” line-up: NBC's Pete Williams with the latest on the Boston investigation… NBC's Charles Hadlock with the latest from West, Texas… former Homeland Security Secy. Tom Ridge on Boston and the ricin investigation…msnbc's Chris Jansing outside of the Boston cathedral where the interfaith service will take place… Plus NBC's Kristen Welker, TIME's Michael Crowley and Roll Call's Shira Toeplitz on today's immigration legislation unveiling and more in the Gaggle.

*** Thursday’s “Andrea Mitchell Reports” line-up: NBC’s Andrea Mitchell interviewsSen. Robert Casey (D-PA), Rep. Chellie Pingree (D-ME), Service Women’s Action Network Executive Director Anu Bhagwati, the Washington Post’s Chris Cillizza, MSNBC’s Chris Jansing and NBC’s Pete Williams, Anne Thompson and Ron Allen.: