If there remained any doubt that McCain should just drop out of the race at this point, this sad episode cinches it. Imagine the person in the White House with his/her finger on that proverbial nuke button, during these very scary times, believing it's A-OK to make light of bombing another country. McCain's temperament has been questioned in the past, with some wondering if he had the personality make-up for the most powerful job in the world. This incident doesn't help him in that regard, at all.