Pierre Thomas has the latest on the active shooter incident that unfolded at Emory University in Atlanta, which is also near the CDC headquarters, prompting the university to send a message to students, saying, "RUN. HIDE. FIGHT. Avoid the area.”; Mary Bruce has details on Pres. Trump announcing that he will meet with Russia's Pres. Vladimir Putin next Friday in Alaska; Trevor Ault has details on the fast-moving wildfires in the West forcing thousands to evacuate, including the Canyon Fire north of L.A. that has exploded in size; and more on tonight’s broadcast of World News Tonight with David Muir. 00:00 Intro 02:39 Emory University active shooter incident prompts shelter-in-place order 04:38 Trump: Face-to-face meeting with Putin on Ukraine war set for next week in Alaska 07:02 Sheriff: Suspect wanted in connection to quadruple murder at Montana bar in custody 08:15 Thousands flee fast-moving wildfires in the West as Canyon Fire explodes in size 10:19 50 million+ under heat alerts ...