Aaron Lucas is a decorated Army officer assigned to Fort Carson in Colorado Springs . NEW : Defendant 's attorney reportedly says Cohen ` ` failed to do the right thing '' Aaron Cohen pleads guilty to two counts of sexual assault on a child . A judge had ruled that he could name his brother as a suspect in his defense . Prosecutor : ` ` No evidence to suggest that the twin brother ... was in any way responsible ''
NEW : Defendant 's attorney reportedly says Cohen ` ` failed to do the right thing '' Aaron Cohen pleads guilty to two counts of sexual assault on a child . A judge had ruled that he could name his brother as a suspect in his defense . Prosecutor : ` ` No evidence to suggest that the twin brother ... was in any way responsible ''