Yeah, I was gonna say that before Pug pointed it out. We have all done it. Sometimes Bush gets a bad rap just because it's the "thing to do" to make fun of him. I highly doubt that he was standing there for minutes looking into the binoculars at darkness like an idiot.
This type of thing is just part of being in the public spotlight, I guess. In any case, I judge these people based on the decisions they make not if they leave the lens cap on.