University of Florida professor and human identification laboratory director Michael Warren was brought on by the prosecution to present a computer animation of the way duct tape could have been used in the death of the child, which the defense objected to hearing. Judge Perry, after a short recess to review, ruled that the video could be shown to the jury. The animation featured a picture of Caylee taken alongside Casey, superimposed with an image of Caylee's decomposed skull, and another with a strip of duct tape that was recovered with her remains.