Mohamed Atta
Mohamed Mohamed el-Amir Awad el-Sayed Atta ( ; ""  ; September 1, 1968 – September 11, 2001) was an Egyptian hijacker and one of the ringleaders of the September 11 attacks in which four United States commercial aircraft were commandeered with the intention of destroying specific civilian targets. He served as the hijacker-pilot of American Airlines Flight 11 and crashed the plane into the North Tower of the World Trade Center as part of the coordinated attacks. At 33 years of age, he was the oldest of the 19 hijackers who took part in the attacks.
Mohamed Gad-el-Hak
Mohamed Gad-el-Hak was born in 1945 in Tanta, Egypt. He grew up in Cairo, and received his B.Sc. (summa cum laude) in mechanical engineering from Ain Shams University in 1966, and his Ph.D. in fluid mechanics from the Johns Hopkins University in 1973, under the tutelage of Stanley Corrsin. Gad-el-Hak lived in the United States of America since 1968, and became a naturalized U.S. citizen in 1981.