Elenco (na ordem dos créditos)
Robert Glenister
Self - Narrator
Mocean Melvin
Narrator
Rob Bell
Self - Mechanical Engineer
Daniel Dickrell
Self - Mechanical Engineer, University of Florida
Luke Bisby
Self - Structural Engineer, University Of Edinburgh
Sian Proctor
Self - Geoscientist & Disaster Specialist
Asegun Henry
Self - Mechanical Engineer, MIT
Matt Robinson
Self - Southern California Safety Institute
Andrew Herrman
Self - Former President, American Society of Civil Engineers
Rose Metcalf
Self - Survivor
Jerry Schemmel
Fallon O'Brien
Self - Eyewitness
Esther Jang
John Lauritsen
Self - Reporter CBS Minnesota
Caitlin Hardy
Self - Naval Architect
Bobby Fariza
Davide Capello
Andy Gannon
Joseph Jang
Riccardo Morandi
Self - Architect
Lindsay Walz
Guglielmo Mattioli
Self - New York Time Journalist