This was a totally unscripted moment. And Trump passed the test. Everyone else failed.
A video of that is here:
And watch Jeb Bush, rolling his eyes as he walked past and then breaking into a big smile. Jeb playing to the crowd.
Trump has situational awareness, an attribute we need in the oval office. His actions spoke volumes about his politeness to others and his ability to act right in the moment, but God forbid that you would attack him,