Yesterday when we came home we saw a guy with a knapsack on his back just standing on the sidewalk of our across-the-street neighbor's home. They were gone. He just stood there not looking at the house but looking straight ahead. He did not seem to be in any distress. We kept looking out the window and he was very still. After about 30 minutes he turned around and walked up the street and disappeared.
Would you have approached him and asked if he needed any help?. Would you have just keep observing him as we did?