Abstract: A tornado door comprises a door body having spaced first and second exterior panels and a window panel sized to be oriented within an opening in the door body exterior panels. The door includes a plurality of S-shaped stiffeners spacing the interior sides of the door body first and second exterior panels and positioned about the periphery of the window panel forming a frame. A sealant establishes a seal between the window panel and the plurality of S-shaped stiffeners and between the window panel and the door body first or second exterior panel. The door further includes a cover ring placed on an exterior surface of one of the door body first or second exterior panels and juxtaposed with the plurality of S-shaped stiffeners. The cover ring and plurality of S-shaped stiffeners are intersecured using a plurality of fasteners which pass between the cover ring mounting holes through the door body first or second exterior panel and into the stiffener mounting holes.