CeeCee Lyles call
Former detective CeeCee Lyles worked as a flight attendant for United Airlines. On 9/11 she placed one airphone call and one cellphone call to her husband, saying the plane had been hijacked by "three guys" and later that the passengers were ready to force their way into the cockpit.
Perhaps the most detailed account of Lyles story and calls appeared in this Pittsburgh Post-Gazette story.
This summary records details of all Flight 93 calls.