Matt Gutman has the latest on tens of thousands that are evacuating after a fire erupted near Castaic Lake, north of Los Angeles; Alex Perez has details on the 17-year-old boy that opened fire inside his Nashville area high school cafeteria, killing a 16-year-old student and wounding another student, according to police; Mary Bruce reports on the 1,500 additional troops Pres. Trump is deploying to the U.S.-Mexico border, after the president declared a national emergency; and more on tonight's broadcast of World News Tonight with David Muir.

For the first time U.S. military jets were used to deport undocumented migrants out of the country, and President Trump's new border czar tells Martha Raddatz the flights will continue every day; Rachel Scott has details as Pres. Trump says he will either overhaul or get rid of FEMA as he toured the disaster zones in North Carolina and Los Angeles; Pierre Thomas reports on the Washington state woman facing charges in the first killing of a Border Patrol agent in more than 10 years; and more on tonight's broadcast of World News Tonight with David Muir.