They are going with an insanity defense.
Attorneys for a former Midland soldier made the announcement on Thursday.
Steven Green has pleaded not guilty to raping an Iraqi teenager, then killing her, and three of her family members last year.
A Federal Judge will decide next week on a trial date.
Federal prosecutors want it set for August of next year, but defense attorneys have asked the judge for a 2009 trial date, saying they need the time to prepare an adequate defense.