Questions have been raised about social distancing guidelines, and whether staying six feet apart is really enough to protect ourselves. This comes after an M.I.T. professor said that sneezes and coughs can travel as far as 27 feet. On "Good Morning America," the Surgeon General said all Americans may soon be advised to wear a face mask - in contrast to what he said just last month. Plus, Deborah Norville shows you how to make your own mask at home.