Subcommittee on Communications, Technology, Innovation, and the Internet Witnesses: • Mr. Curtis Brown, Deputy Secretary of Public Safety and Homeland Security, Commonwealth of Virginia • Dr. Damon Darsey, Assistant Professor, University of Mississippi Medical Center • Mr. Mark Goldstein, Physical Issues Director, Government Accountability Office • Mr. Michael Poth, Chief Executive Officer, FirstNet • Mr. Chris Sambar, Senior Vice President, AT&T