The Invisible Plane

S3, E8: A foggy morning in Milan turns deadly when an MD-87, leaving Italy's Linate Airport, collides with a Cessna crossing the same runway. Tragically, the crash site goes unnoticed in the control tower for several minutes because of near-zero visibility. It's only after the wounded come looking for help that authorities realize the magnitude of the catastrophe before them. Revisit the 2001 collision that claimed 118 lives, and discover the airport's shocking history of similar runway incursions and near misses.