Professional wrestler Chris Benoit (seen here), his wife and 7-year-old son were found slain June 25, 2007, at their home in Fayetteville, Ga. "Roid rage" was cited as a possible factor in that incident and in the killings last year of 16 Afghan civilians in which U.S. Army Sgt. Robert Bales stands accused. (World Wrestling Entertainment via Associated Press)
Army Staff Sgt. Robert Bales participates in an exercise at the National Training Center at Fort Irwin, Calif., on Tuesday, Aug. 23, 2011. (AP Photo/Defense Video & Imagery Distribution System, Spc. Ryan Hallock)
Army Staff Sgt. Robert Bales participates in an exercise at the National Training Center at Fort Irwin, Calif., on Tuesday, Aug. 23, 2011. (AP Photo/Defense Video & Imagery Distribution System, Spc. Ryan Hallock)
Kari Bales (third from right) stands next to attorney Lance Rosen (third from left) as she listens to her sister, Stephanie Tandberg (second from right), read a statement to reporters on Nov. 13, 2012, outside the building housing a military courtroom on Joint Base Lewis McChord in Washington state, where a preliminary hearing ended for Kari's husband, U.S. Army Staff Sgt. Robert Bales. Bales is accused of 16 counts of premeditated murder and six counts of attempted murder for a pre-dawn attack on two villages in Kandahar Province in Afghanistan in March of 2012. At right is Stephanie's husband, Eric Tandberg. (Associated Press)
Kari Bales (third from right) stands next to attorney Lance Rosen (third from left) as she listens to her sister, Stephanie Tandberg (second from right), read a statement to reporters on Nov. 13, 2012, outside the building housing a military courtroom on Joint Base Lewis McChord in Washington state, where a preliminary hearing ended for Kari's husband, U.S. Army Staff Sgt. Robert Bales. Bales is accused of 16 counts of premeditated murder and six counts of attempted murder for a pre-dawn attack on two villages in Kandahar Province in Afghanistan in March of 2012. At right is Stephanie's husband, Eric Tandberg. (Associated Press)
**FILE** In this courtroom sketch, U.S. Army Staff Sgt. Robert Bales (center) is shown Nov. 5, 2012, during a preliminary hearing in a military courtroom at Joint Base Lewis McChord in Washington state. An Afghan National Army guard who reported seeing a U.S. soldier outside a remote base the night 16 civilians were massacred in March said the man did not stop even after being asked three times to do so. (Associated Press)
**FILE** In this courtroom sketch, U.S. Army Staff Sgt. Robert Bales (center) is shown Nov. 5, 2012, during a preliminary hearing in a military courtroom at Joint Base Lewis McChord in Washington state. An Afghan National Army guard who reported seeing a U.S. soldier outside a remote base the night 16 civilians were massacred in March said the man did not stop even after being asked three times to do so. (Associated Press)
In this detail of a courtroom sketch, U.S. Army Staff Sgt. Robert Bales (seated at front right) listens on Monday, Nov. 5, 2012, during a preliminary hearing in a military courtroom at Joint Base Lewis-McChord in Washington state. Sgt. Bales is accused of 16 counts of premeditated murder and six counts of attempted murder for a pre-dawn attack on two villages in Kandahar province in Afghanistan in March 2012. At upper right is Col. Lee Deneke, the investigating officer, and seated at front left is Sgt. Bales' civilian attorney, Emma Scanlan. (AP Photo/Lois Silver)
