Close Sonar Glasses from G-Technology Nichole Sullivan, research engineer with G-Technology tells Chris Leary and Markette Sheppard how their sonar glasses help the visually impaired. Plus, Jack Wood demonstrates how the sonar glasses work. WUSA 11:39 AM. EST January 04, 2016 JOIN THE CONVERSATION To find out more about Facebook commenting please read the Conversation Guidelines and FAQs Leave a Comment TRENDING VIDEOS Giraffe Birth Facts Video appears to capture shooting in NE DC GRAPHIC CONTENT: Twitter user captures DC police shooting #HeartLove: Miracles and medicine working together for Md. girl Young woman's cautionary windshield tale Windshield shirt warning post goes viral New information in DC police shooting Falls Church teacher was investigated before Newlyweds journey cut short Two related MS-13 gang murders More Stories What we know about the MPD Thursday shootout suspect Feb 24, 2017, 9:18 p.m. Georgetown's legendary basketball coach looks back… Feb 24, 2017, 2:30 p.m. Yellow Weather Alert Saturday for showers & T-storms Feb 18, 2016, 10:28 a.m.