Mullin on heat ray weapon: ‘We’re always evaluating technology on the border’

Department of Homeland Security Secretary Markwayne Mullin said the agency is "always evaluating technology on the border" after the Pentagon authorized testing of the Active Denial System, a military-grade directed-energy weapon, for potential use at the U.S.-Mexico border. The heat-ray technology has sparked controversy over its deployment in civilian border operations. Mullin's remarks come as DHS explores various tools to strengthen border security.