There is a moment early on in Cirque Du Soleil’s Luzia when water pours down from the big top ceiling, droplets shimmering like falling diamonds. A trapeze artist and another acrobat spinning across the stage floor in a large metal ring twirl into and out of this waterfall. It’s a dreamlike …

David Hein and Irene Sankoff thought the idea was far-fetched when it was first suggested they write a musical about what happened after 9/11 when 38 planes that were in the air were diverted to Gander, Newfoundland, population 11,000.