The 2012 infiltration of a U.S. nuclear arms plant by three peace activists was inexcusable and federal officials are conferring on how to prevent similar incidents, new Energy Secretary Ernest Moniz said on Monday.
The antiwar advocates broke into the Y-12 National Security Complex in Tennessee in July and reached the "Protected Area" containing the nation's main bomb-grade uranium storehouse. They wrote on the structure's exterior and broke off a small piece before being apprehended.
"Clearly this was an unacceptable breach of security," the Associated Press quoted Moniz as saying before a visit to Y-12 on Monday.
He added: "With or without the Y-12 incident, safety and security are essential core elements of our mission. I'm in discussion in the department, in the administration and in the Congress right now, talking about how we will move forward on some organizational changes."