Thin-skinned? Too irritable? Too likely to strike out wildly when on the receiving end of a slight, real or imagined? Would you want to entrust someone whose temperament is on a hair-trigger, as Trump's was said to be, with the awesome power of the U.S. military, including our nuclear codes?

That's the rap, endlessly repeated by the (irony alert!) calm and even-keeled Hillary Clinton, echoed faithfully by battalions of Democratic operatives with bylines at CNN, MSNBC, The New York Times, The Washington Post, and elsewhere.

But is it true? I happened to be watching Trump's rally in Reno last night when Secret Service agents rushed on stage -- "Go, go!" -- to grab him and, protecting his body with theirs, scurry him backstage after a protestor made what seemed to be a threatening move towards the stage.

A few minutes later, after the fellow had been removed from the arena, Trump strolled calmly back on stage.  "Nobody ever said this was going to be easy for us, but we will never be stopped," he observed. He then gave effusive thanks to the Secret Service and proceeded with his campaign talk. He was cool, calm, collected, almost nonchalant.  Ten minutes later he was boarding his plane to fly to Denver to preside over his final rally of the day.