National Nuclear Security Administrator and Under Secretary for Nuclear Security Thomas P. D’Agostino announced last week that he is resigning, saying "I have decided the timing is right for me to leave Federal service." Various news reports said his resignation is unrelated to problems at Y-12.

D'Agostino presided over the "unacceptable and inexcusable" (his words) security breach at the Y-12 National Security Complex in Oak Ridge this summer. He and other DOE officials came under intense scrutiny during a Congressional hearing of the House Committee on Energy and Commerce Subcommittee on Oversight and Investigations, which concluded that "While NNSA oversight and management appear to have improved in recent years, events show there continues to be safety, security, and performance challenges in the weapons complex."

In October, the Project on Government Oversight called for his resignation over security problems at Los Alamos National Laboratory.