Complex sentence: According to FBI director Robert Mueller and the 9/11 Commission, Omari entered the United States through a Dubai flight on June 29,2001 with Salem al-Hazmi, landing in New York.
Split into simpler sentences: According to FBI director Robert Mueller and the 9/11 Commission, Omari entered the United States through a Dubai flight on June 29 with Salem al-Hazmi. On June 29,2001, Omari travelled to the U.S. for the first time, landing in New York.