A highlight of the day

I made a girl feel safer on the Metro.

She was across from me, several seats away, and was being subtly propositioned/bothered by some guy. I caught her gaze and was able to inaudibly communicate my concern. She smiled appreciatively and was subsequently aware of my observation of the situation. Several stops later, after she stood up and before she got off the train, she said, "Thank you" and appeared to have a sincere smile.

I wish I could do something like that for everyone.