Nineteen men hijacked four fuel-loaded US commercial airplanes bound for west coast destinations. A total of 2,977 people were killed in New York City, Washington, DC and outside of Shanksville, ...

Smoke rises from Lower Manhattan as USNS Comfort (T-AH 20) sails into New York Harbor on Sept. 14, 2001. (File photo by Fleet Combat Camera Atlantic photographer PH2 Aaron Peterson) A Palm Springs ...

At 9:03 a.m., a second moment of silence marked the moment United Airlines Flight 175 crashed into floors 77 through 85 of the South Tower, followed by silence at 9:37 a.m., when another flight ...