Moments of silence have been marked at various sites around the United States in commemoration of the victims of the 911 attacks 19 years ago. US President Donald Trump-led tributes yesterday at the site where a fourth plane was brought down after it was hijacked in Shanksville Pennsylvania. New York and Washington D.C. also marked the attacks on those cities almost two decades ago. For more news, visit sabcnews.com and also #SABCNews, #Coronavirus, #COVID19, #COVID-19News on Social Media.