The authoritative guide to ensuring science and technology make life on Earth better, not worse.


Jay A. Tilden

Jay A. Tilden serves as the Department of Energy/National Nuclear Security Administration’s deputy undersecretary for Counterterrorism and Counterproliferation, with responsibility for preparing for, responding to, and resolving nuclear and radiological incidents and accidents worldwide.  He provides overall management of the Nuclear Emergency Support Team. Tilden is a career member of the Senior Executive Service.