It’s on. After a year-long delay, the Tokyo 2020 Olympics have finally begun, albeit in the shadow of COVID-19. The opening ceremony today at the $1.5 billion Olympic Stadium was an extravaganza that was both celebratory and subdued. But our favorite part came right toward the end when more than 1,800 drones took to the skies to form a globe over the stadium as artists from five continents sang Imagine.