The crossword solution for the term 911! PRECEDER is RENO, which is a four-letter word. Reno is the second largest city in Nevada and is known as 'The Biggest Little City in the World'. It is most famous for its casinos and nightlife, but it is also home to the University of Nevada, Reno. The city was named after General Jesse Lee Reno, an American Civil War Union officer. The term 911! PRECEDER refers to the fact that Reno was the first city in the United States to implement the 911 emergency telephone system in 1968.