Troy Anthony Davis (October 9, 1968 – September 21, 2011) was a man convicted of and executed for the August 19, 1989 murder of police officer Mark MacPhail in Savannah, Georgia. MacPhail was working as a security guard at a Burger King restaurant and was intervening to defend a man being assaulted in a nearby parking lot when he was murdered. During Davis's 1991 trial, seven witnesses testified they had seen Davis shoot MacPhail, and two others testified Davis had confessed the murder to them. There were 34 witnesses who testified for the prosecution, and six others for the defense, including Davis. Although the murder weapon was not recovered, ballistic evidence presented at trial linked bullets recovered at or near the scene to those at another shooting in which Davis was also charged. He was convicted of murder and various lesser charges, including the earlier shooting, and was sentenced to death in August 1991. Davis maintained his innocence up to his death. In the twenty years between his conviction and execution, Davis and his defenders secured support from the public, celebrities, and human rights groups. Amnesty International and other groups such as the National Association for the Advancement of Colored People (NAACP) took up Davis's cause. Prominent politicians and leaders, including former President Jimmy Carter, Rev. Al Sharpton, Pope Benedict XVI, Archbishop Desmond Tutu, former U.S. Congressman from Georgia and presidential candidate Bob Barr, and former FBI Director and judge William S. Sessions called upon the courts to grant Davis a new trial or evidentiary hearing. In July 2007, September 2008, and October 2008, execution dates were scheduled, but each execution was stayed shortly before it was to take place. In 2009, the Supreme Court of the United States ordered the U.S. District Court for the Southern District of Georgia to consider whether new evidence "that could not have been obtained at the time of trial clearly establishes [Davis'] innocence". The evidentiary hearing was held in June 2010. The defense presented affidavits from seven of the nine trial witnesses whose original testimony had identified Davis as the murderer, but who it contended had changed or recanted their previous testimony. Some of these writings disavowed parts of prior testimony, or implicated Sylvester "Redd" Coles, who Davis contended was the actual triggerman. The state presented witnesses, including the police investigators and original prosecutors, who described a careful investigation of the crime, without