Families gathered on Monday night in Alexandria, Virginia, to inaugurate a new memorial nearly a year and a half after 67 of their loved ones died in a mid-air collision over the Potomac River.

“My son Peter, his wife Donna, and their girls, Everly and Alydia, were on the plane,” Martha Livingston told DC News Now. “They were elite skaters. They were beautiful. And we miss them. And we appreciate the city of Alexandria honoring them and remembering them in this way.”