If I was asked to do something crazy like perform my prescribed duties at work, and responded with "yeah, yeah...I'm exhausted," I'd be politely told to cram it and get to work. And my job doesn't involve killing people.
Not George Tenet. He says he's too exhausted to make sure the info we're using to invade a sovereign nation is legit, and he gets a Presidential Medal of Freedom. Nice work if you can get it.