You've all missed the real source of the bird shot ambush.
Lynne Cheney was not worried about Dick Cheney and Pamela Willeford.
It was the hanky panky between Dickie Bird and Harry Whittington that riled her enough to hide in the bushes (untended pun) and take a shot at that husband seducer. Unfortunately, Lynne is a good shot and downed Harry. Her guilty husband had to take the blame or she would have blabbed his infidelity from coast to coast.
So far, the Secret Service has successfully hidden the fact of Lynne's presence at the shoot out.
BBB