An American Airlines plane with 64 people on board collided with an Army helicopter over Washington, D.C., and crashed into the Potomac River.

The commemoration featured a star-studded group of some of the best U.S. figure skaters of the past and present taking part to pay tribute to the 67 people who died when an Army helicopter collided with an American Airlines flight and crashed into the Potomac River on Jan.

At the end of his figure skating performance, when the last note of his parents’ favorite song played in an arena packed with spectators and heavy with sorrow, Maxim Naumov dropped to his knees at the center of the ice.