Memorial Day. Today we honor and mourn the heroic servicemen and women who made the ultimate sacrifice for this country. We'll also be thinking about the impact of COVID-19 on the millions of lives around the world these past 5 months -- the many lives lost, the many lives changed, and the many lives saved by our heroes of today: our healthcare workers, first responders, and many others who have sacrificed so much to fight this battle on the front lines.