Stephanie Ramos has the latest on the massive explosion and fire at a lumber company in Maine that killed a firefighter and injured at least 10 others, and is being described as a “mass casualty incident;” Aaron Katersky has details on the Iraqi national in U.S. custody accused of orchestrating terror attacks around the world taking aim at American and Jewish targets in retaliation for the war in Iran; Pierre Thomas reports on sources telling ABC News about the possibility of Pres. Trump