After several abrupt responses to questions, I realized he was upset. I asked if we could talk and when he indicated yes, I invited him to take a walk around campus. We did and he indicated he was upset when I didn't recommend him for a promotion. I indicated that was the second time he had behaved that way and that was the reason. We talked several minutes and I asked why he demonstrated his anger and he indicated I was overlooking his strong points. When I indicated showing angers not appropriate particularly around students; and I would agree to help him correct that behavior.. He thanked me for discussing the matter and agreement to help. When I retired, he was appointed as my replacement.