There's this guy that is at the library every day. He's a homeless fella and, according to one of our security persons, he is a Vietnam veteran and he was an engineer at some point in his life. I think Vietnam messed him up so much that he just stands around all day. He's a nice guy and smiles and says hello if you greet him. He fascinates me but I've never really talked to him.
Here's a picture of him standing outside waiting for the light to change.