Stephanie Foster briefs DHS S&T Under Secretary (Acting) William Bryan on the Next-Generation Incident Command System (NICS) as he observes its use in water-rescue operations. Photo courtesy of DHS S&T Trump taps DOE veteran to head Homeland Security research arm President Trump plans to nominate William Bryan, an experienced critical infrastructure specialist, to lead the Department of Homeland Security's R&D arm. Jul 6, 2018 By Sean Lyngaas