AdvertisementCapitol Police Officer Who Responded To Mob Attack Dies Off DutyJanuary 10, 2021Barbara SpruntAlana WisefacebookEmailAn American flag flies at a memorial for U.S. Capitol Police Officer Brian Sicknick, who was fatally injured when a pro-Trump mob stormed the U.S. Capitol on Wednesday. Another officer, Howard Liebengood, died Saturday in an off-duty death. (Getty Images)