The term "911" can refer to two different significant events or systems, depending on context:
- The emergency telephone number "911" in the United States was first implemented in 1968. The first 911 call was made in Haleyville, Alabama, that year, after AT&T chose the number 911 as a simple, easy-to-remember emergency number in 1967. The rollout of 911 service then expanded gradually across the country over subsequent decades
- The "9/11" terrorist attacks occurred on September 11, 2001. These were coordinated Islamist terrorist attacks by al-Qaeda against the United States, involving hijacked airplanes crashing into the World Trade Center towers in New York City, the Pentagon, and a field in Pennsylvania. This tragic event is commonly referred to as "9/11"
So, if you are asking about the year related to the emergency number 911, it was established in 1968. If you are asking about the year of the 9/11 attacks, that was 2001.
