Video published Friday appears to show Iraqi refugees, trapped by the Islamic militant group known as ISIS, as they gather packages of humanitarian aid.
The video is not yet verified by NBC News.
U.S. military cargo planes, flying at low altitude, delivered 5,300 gallons of fresh water and 8,000 packaged meals to the Sinjar mountains, where tens of thousands of Christians and minority Yazidi are believed trapped.
Obama said that he was acting to stop a potential genocide. American warplanes also dropped bombs Friday on an ISIS artillery unit outside the Iraqi city of Erbil.