There are five basic reasons why leaders are fearful of Red Teaming. None of them are very good, but you need to know them so you can anticipate these objections. The U.S. military has some really insightful Red Teaming operations, but in my experience, the majority of Army leaders fail to embrace this work — and often reject it entirely.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.