John, Elly, Nick and Linnea are the F.A.T. 4! What's that? It's an engineering squad that's participating in the MIT Museum's annual Friday after Thanksgiving Chain Reaction event. It's a crazy science fun-for-all where teams of inventors create kinetic sculptures of everyday items. All the teams hook their chain reactions together for one, big extravaganza. Their question: How can we make a cool chain reaction?