Akbar murdered two fellow soldiers in Kuwait just before the outset of the Iraq war by rolling a grenade into an army tent filled with sleeping soldiers.
Akbar was a convert to Islam and said he did it to prevent the soldiers from killing Muslims in Iraq. He was court martialed in 2005 and sentenced to die. However, at the rate by which the military executes murderers, he may die of old age before his execution.
There are currently five men on Leavenworth's death row; Nidal Hassan will make six if he is sentenced to die.
Read this ABC News story here for details.