John Nance, former airline pilot and ABC's Aviation Expert, felt that was very significant, stating that wreckage in three sites, with a wing landing apart from the engine and the fusilage, indicated something "more catastrophic" than an engine falling off.
He stopped short of saying bombs or "terrorists," but that seemed to be where he was leaning. There are baggage compartments near where the wing meets the fusilage. He thought it very unlikely that an engine falling off could take off the entire wing.
