US used 'mysterious weapon' in Venezuela; guard says 'We started bleeding from nose'

A Venezuelan security guard loyal to Nicolas Maduro has revealed that US used a "mysterious weapon" during attack on the country. "They [US forces] launched something...it was like a very intense sound wave. Suddenly I felt like my head was exploding...We all started bleeding from the nose. Some were vomiting blood. We...were unable to move," the guard said.