Invisible in the Jungle

There's a man in the neighborhood who when he appears it's hard to recognize him. "He's really good at deflecting," my husband says, noticing this too. I am fascinated because I am usually good at recognizing people. This man is a chameleon. Like a good actor he really knows how to shape-shift. I wonder if it's from being in the Vietnam war when he had to make himself invisible in the jungle.