Jason Nattress is a senior graduate researcher in the Nuclear Engineering and Radiological Sciences Department at the University of Michigan. His interest in nuclear science and engineering started during his time in the U.S. Navy, where he served as a nuclear operator on the USS Alaska, a ballistic missile submarine. After his time in the service, he obtained his bachelor of science in nuclear engineering from Rensselaer Polytechnic Institute. He then worked at Hope Creek Generating Station as a nuclear operations instructor and also as a systems manager in the plant’s engineering department. He started his graduate studies at the Pennsylvania State University, where he obtained his masters of science in nuclear engineering. At Penn State, his research focused on developing composite neutron detectors. He is currently a Nuclear Nonproliferation International Safeguards Graduate Fellow, and his current research aims to address some of the major challenges affecting nuclear security and nonproliferation. Specifically, he concentrates on developing novel approaches to detecting shielded special nuclear material in transit and related nuclear treaty veri1cation measurement techniques.