Foster looked at the backs of the group of three as they left, glaring at him as they did. At the very least they gave up pretty quickly, otherwise this might have become pretty ugly. Once he was sure that they wouldn't be coming back, Foster properly helped up the elderly man and brought him over to a place where the two of them could take a seat.
"Thank you, young man. I'm glad to see that there are still helpful people like you around these days." The man said with a broad smile, but Foster didn't really pay attention to what he was saying. Rather, he noticed that the man was slightly limping. That guy tripped over the man's leg earlier, so that was probably when this happened. The moment that the man took a seat, Foster kneeled down and took a closer look. His ankle was slightly red and a bit swollen. Clearly, this man was particularly frail.