next, the fbi and dhs now warning faith-based whcommuniti about the potential threats of more violence after that hostage standoff in texas. tonight, the rabbi describing the moment he and other hostages got away, saying he threw a chair at the gunman so they could make a run for the door. a cameraman catching them getting out. authorities releasing this image of the attacker, malik akram, saying he was not on any u.s. government watch list. abc's mireya villarreal is in texas. >> reporter: tonight, new details emerges about that terrifying hostage standoff in texas. a british national allegedly armed with a gun holding four people hostage for more than 11 hours. rabbi charlie cytron-walker describing the moment he and two congregants escaped. >> the exit wasn't too far away. i told them to go, i threw a chair at the gunman and i headed