Phil Lipof is covering breaking news, a fiery small plane crash in a heavily populated Philadelphia neighborhood with authorities saying the plane possibly hit several buildings and cars and multiple casualties reported; Gio Benitez has details on the new clues emerging in the investigation into the deadly midair plane crash in D.C., and Whit Johnson has the heartbreaking stories of the victims as family and friends mourn the lives lost; Rachel Scott reports on the major new tariffs Pres. Trump is set to impose on all products from Canada and Mexico starting Feb. 1, the White House confirmed; and more on tonight's broadcast of World News Tonight with David Muir.