They stood at attention at the grave of their fallen president. Their salute was as crisp as the cool morning, a familiar gesture to honor a leader taken away long before his assignment was complete. It was unusually silent that morning near the grave of President John F. Kennedy. The people nearby bowed their heads as these young men saluted the former commander in chief, a leader they would only know through the legacy symbolized by an eternal flame at his grave. Well-worn boots framing the flame, a solemn reminder of their commitment to protect their country. Young men willing to face harm while wearing those boots on the ground.