OpenAI CEO Sam Altman met with a handful of lawmakers in Washington, D.C. where Sen. Mark Kelly, D-Ariz., said he raised some "serious questions" about the company's approach to warfare and its recent deal with the Department of Defense . In an interview with CNBC's Emily Wilkins , Kelly said the group talked "in detail" about surveillance and how artificial intelligence systems could be used within a kill chain. He called it a "good discussion." "There's got to be guardrails in place, and we'