the two imams masudur rawman and mohamed zaghloul boarded the flight in memphis but the plane operated by regional carrier atlantic southeast airlines returned to the gate for security to re-screen the men. >> the only reason that the pilot has cited is that some of the passengers didn't feel comfortable, but when the passengers were asked whether anybody felt uncomfortable none of them indicated that they were. >> rahman and zaghloul passed security a second time but in spite of pleas from a delta agent the pilot would not allow them back on the plane. federal regulations give the captain authority over all aspects of the flight including who may board the aircraft. >> we'll let them check our staff, our luggage, our body and then they said, okay, you guys are good. you can go. when we are entering into the plane, the supervisor, mr. russell, he said,