When a traveler’s flight is delayed, there’s a tendency to roll eyes and breathily exhale until there’s a sign that at least one airline employee notices. It’s usually seen as a disheartening inconvenience to be trapped in the world of snack bars and world-famous chef-endorsed sports bars. But that’s not the case for the Dance Theatre of Harlem. When the troupe was stranded at the Pittsburgh International Airport, the dance crew decided to put on a show (mostly to their own amusement) on the moving walkways. Thankfully, ballerina Ingrid Silva caught the artsy antics and put it up on Instagram.