Thank you. Atta was Egyptian, and none of this sounds right. If it were real, Mr. Gilmore would not just have been casually contacted by Delta security, he would have been whisked off to DC for a month to tell Homeland Security everything he knew. In fact, there is a 100% chance he would have radioed ahead and had the police waiting at the gate to pick up "Atta" once it became clear he was an impostor.
You're welcome. Even I, a true cynic, have trouble believing any bona fide commercial airline pilot confronted with the lies described in this "email" would not have made such arrangements.