`  Whitman visited UT's mental health center toward the end of March 1966. Dr. Maurice Dean Heatly was assigned to Whitman. According to A Sniper in the Tower, Dr. Heatly described his first impression of the former Marine as someone ``who seemed to be oozing with hostility.`` Whitman shared his secret desire with Dr. Heatly that day ``about going up on the Tower with a deer rifle and shooting people.```