The Rachel Maddow Show 03/19/12

NNSA administrator Tom D'Agostino on nuclear security

Tom D'Agostino, Undersecretary for Nuclear Security and Administrator of the NNSA, talks with TRMS producer Vanessa Silverton-Peel about the breadth of the operation and resources behind containing and reclaiming the spread of nuclear material around ... more Duration: {{video.duration.momentjs}}