TUCSON, Arizona, Dec. 20 -- The U.S. Attorney for the District of Arizona, Gary Restaino, issued the following news release: On Friday, Koreasa M. Williams, 46, of Tucson, Arizona, was sentenced by U.S. District Judge Jennifer G. Zipps to 51 months in prison. Williams previously pleaded guilty to wire fraud. In her guilty plea, Williams, a licensed insurance agent, admitted that she devised a scheme to defraud nine annuity clients out of $1,064,522. In furtherance of her scheme, Williams sent   more