By: Brittany Toolis OKLAHOMA CITY - Records from the Federal Aviation Administration showed Stephon Duncan, the man arrested after causing a Delta flight to make an emergency landing in Oklahoma City, is a certified flight attendant. A passenger on that flight said that makes the incident even worse because Duncan had the ability to open the aircraft's door. "When the guy was in front and tried to open the plane door that was truly the scariest moment of my life, because if he was able to open the door, we would have crashed into the ground," said passenger Brannon Nazarian.