Matt Rivers reports as 120 million Americans are under alerts for a life-threatening cross-country storm, bringing "near historic" fire conditions in the Plains and Midwest and possible long-track tornadoes in the Deep South; Mola Lenghi has details on the American Airlines jet that was diverted to Denver after an engine started rattling and then caught fire on the tarmac, forcing some passengers to evacuate onto a wing; Pierre Thomas reports on President Trump’s rare visit to the Department of