Robert Siegel talks with Obaida Hitto, a 25-year-old Syrian American from Texas who spent five months assisting the Free Syrian Army in Deir al-Zour on the Euphrates River, near the border of Iraq. He documented the violence in the eastern Syrian city through videos he posted on the Internet, until he was injured in a mortar attack by Bashar Assad's forces at the end of September. He is now recovering in Istanbul.