Thomas Paul D'Agostino
Undersecretary for Nuclear Security and NNSA Administrator

Mr. Thomas Paul D'Agostino is the undersecretary for Nuclear Security at the U.S. Department of Energy and the administrator for the National Nuclear Security Administration (NNSA). He was nominated by the President for this position on May 17, 2007, confirmed by the U.S. Senate on August 1, 2007, and sworn-in by the Secretary of Energy on August 30, 2007. read bio>

William C. Ostendorff
NNSA Principal Deputy Administrator

 Mr. William (Bill) C. Ostendorff was nominated by the President to be the principal deputy administrator on February 26, 2007, and confirmed by the U.S. Senate on March 29, 2007. He joined NNSA on April 9, 2007, and was sworn in by Secretary of Energy Samuel W. Bodman. read bio>