A graduation party in Mesa, Arizona, on May 24, 2009, ended in tragedy when 38-year-old Sally Johnston-Huddleston was shot and killed. Her ex-boyfriend, Brent Matthew Banks, reportedly arrived at the gathering, became enraged after seeing Johnston-Huddleston with another man, and assaulted her before leaving to retrieve two loaded handguns from his vehicle. He returned and fatally shot Johnston-Huddleston in the back of the head as she knelt on the ground; he also shot and killed 32-year-old Auston G. Blanks.

Banks then fired on responding Mesa police officers, wounding one who suffered a shattered arm bone that required multiple surgeries. After a prolonged SWAT standoff he surrendered and was taken into custody. He was charged with two counts of first-degree murder, two counts of attempted first-degree murder, and seven counts of aggravated assault, and prosecutors announced their intention to seek the death penalty.

Are there witnesses or anyone who attended that party who can add details about the sequence of events or the people present?