Jack Tueller is a 90-year-old WWII veteran. In this incredibly poignant video, Tueller recounts a rainy 1944 night when he played a song on his trumpet for an enemy soldier. Little did he know, it may have saved his life.

Lest any of you forget, that is the face of a true American hero—a member of our Greatest Generation. Please cherish him, and every one of his courageous colleagues, while you still have the chance to do so.

(Thanks to Frank Cozzarelli for the tip!)