TORRANCE, Calif.–(BUSINESS WIRE)–Dr. Rian Bahran, who oversaw the federal portfolio for advanced reactor research, demonstration, and deployment at the Department of Energy, has joined Antares as Chief Nuclear Officer. Bahran joins as Antares moves from a demonstrated reactor to fielded systems, following the June 4 initial criticality of its Mark-0 reactor and the close of a $470 million Series C. Most recently, Bahran served as Deputy Assistant Secretary for Nuclear Reactors at the U.S. Dep