On September 11, 2001, terrorists hijacked four commercial airliners to strike targets in the United States. Nearly 3,000 people died as a result of the attacks.
By presidential proclamation, Americans are called on to observe Patriot Day each September 11 with a moment of silence beginning at 8:46 AM Eastern Daylight Time. They may also observe the day with ceremonies and activities, including remembrance services. Flags should be displayed at half-staff in honor of the individuals who lost their lives.
Many Americans will serve in their communities in honor of 9/11 as part of the National Day of Service and Remembrance. Service projects range from food drives and home repairs to neighborhood cleanups and disaster preparation activities. In many areas, volunteers will honor veterans, soldiers, or first responders by collecting donations, assembling care packages, and writing thank you letters.
Learn how you can participate in public service on the National Day of Service and Remembrance.
Other activities you may take related to 9/11:
Keeping America Safe
Learn how you can prepare for and respond to a terrorist attack, or learn more about the National Terrorism Advisory System. You may also review the U.S. Department of Homeland Security's report of the 9/11 Commission.
The U.S. State Department recommends that U.S. citizens abroad enroll in the Smart Traveler Enrollment Program.
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