Two centimeters long by how wide? Zero? And maybe .1 deep? Like a papercut? Something like that could possibly get stitched or glued together in the allowed time. But it would definitely be shrapnel in that case, or his own fingernail. Like, if he felt a bullet go past, realized and ducked, then felt foolish and decided it would be better publicity with a wound instead of the focus being on him crouching for cover. I won’t say cowering because it’s an appropriate response to being shot at, but he would think it.
My heart goes out to the 3 very real victims, whose only crime was being idiot enough to be at a Trump rally. I hope the Trump campaign will put some money towards their medical bills (she said knowing they won’t).