Ballistics experts have questioned whether the bullet which killed Lt. Oliver could have come from Workman's gun. Many years after the trial, Dr. Cyril Wecht, a board member of the American Board of Legal Medicine, has testified that, "is my professional opinion, based upon a reasonable degree of medical certainty, that the gunshot wound to [Lt. Ronald D. Oliver is not consistent with the type of ammunition used by Mr. Philip R. Workman. I do not believe that it was Mr. Workman's gun that fired the shot that fatally wounded [Lt.] Oliver." As Dr. Wecht was giving evidence many years subsequent to the death of Lt. Oliver, he did not examine the body in person. Rather, his professional opinion was given on the basis of studying photographs of the deceased.