The U.S. military has its own laws and court system separate from those of the states and the federal government. Although the military justice system allows the death penalty, no executions have been carried out in over 50 years. The last execution was the hanging on April 13, 1961 of U.S. Army Private John Bennett for rape and attempted murder. The military death penalty law was struck down in 1983 but was reinstated in 1984 with new rules detailing the aggravating circumstances that make a case death-eligible. Only about one-third of the capital cases tried under this law resulted in a death sentence. As of 1997, military law allows for an alternative sentence of life without parole. Six men are currently on the military death row, which is housed in the disciplinary barracks at Fort Leavenworth, Kansas. The President has the power to commute any military death sentence. A 2012 studyindicated that defendants of color in the military were twice as likely to be sentenced to death as white defendants.