Speaking of clowns. Here's a little summary of the "Pepsi girl":
Before 3 years at PepsiCo, she spent 27 years in Secret Service. But, to your other point - Is she in the end responsible for failure - yes, but was she the one in charge of directly all of the minutiae, I'm sure not. She's the head of the entire organization. Someone else oversaw the operation details and all the prep work.
Should she do public interviews and defend herself - probably not.