Staff Sergeant Timothy H. Walker fell victim to a makeshift bomb that detonated near his vehicle on November 8, 2008. He was serving in Baghdad, Iraq, in support of Operation Iraqi Freedom, and was within one month of completing his second tour in Iraq. At the time of his death, he was assigned to Headquarters, Headquarters Company, 64th Brigade Support Battalion, 3rd Brigade Combat Team, 4th Infantry Division, and was garrisoned at Fort Carson, Colorado. The unit’s mission in Iraq was to secure Sadr City in Baghdad’s northeast sector. A memorial service was held in Sergeant Walker’s honor at the Soldier’s Memorial Chapel on Fort Carson on November 16, 2008.