NEW : Judge rejects requests for settlement settlements from Hasan 's lawyers . Army regulations prevent soldiers from wearing facial hair while in uniform . The 2009 shooting that killed 13 soldiers occurred at the post 's processing center . NEW : Prosecution expert witness discusses evidence apparently found on Hasan 's body . Hasan appears in military court thinner , bearded , in wheelchair .
NEW : Judge rejects requests for settlement settlements from Hasan 's lawyers . The 2009 shooting that killed 13 soldiers occurred at the post 's processing center . NEW : Prosecution expert witness discusses evidence apparently found on Hasan 's body . Hasan appears in military court thinner , bearded , in wheelchair .