Lining up in the queue to ride the escalator down to the ground floor of Penn Station this morning, I heard someone singing “What a Friend in Jesus” in a quiet, lovely voice amongst the murmur of the crowd. As I got to the bottom, I realized it was an elderly man with a cane, carefully leading another elderly man with blacked-out glasses and a walking stick. They moved slowly, dragging luggage behind them, up to the Metro turnstiles, until I lost sight of them. I thought that was a lovely way to help a blind person find their way, and the sound of his song has stuck with me for the rest of the day.