Some time back there was a guy wearing a vest at a public pistol range. I didn't think he was a LEO or worked in a position that would require a vest. We got to talking and I asked about the vest. He said "at a public range you don't know the guy shooing next to you, he may point his pistol your way while clearing a jam, he might have no idea what's he's doing and bounce one off the cement floor or me might be a nut that rents a pistol and decided to shoot you before shooting himself". Made a lot of sense, I protect my years and eyes why not my center mass when at the range?