Alex Perez reports on the new video appearing to show the man police say drove a truck full of explosives into a Michigan synagogue buying $2,000 worth of fireworks just days before the attack; Ian Pannell has the latest on the Iran war as the Pentagon confirms six American service members were killed when their refueling plane went down over friendly airspace in Iraq, and an additional 5,000 U.S. Marines and sailors have been sent to the Middle East; Morgan Norwood has details on the newly-released internal messages showing two Live Nation employees mocking customers and joking about gouging fans with high fees, with one writing about “robbing them blind;” and more on tonight’s broadcast of World News Tonight with David Muir. 00:00 Intro 01:57 New video appears to show Michigan synagogue attack suspect buying $2,000 worth of fireworks 05:14 Student fatally stabbed Old Dominion University terror suspect, sources say 07:19 6 U.S. crew members killed in jet crash as thousands of Marines...