The above mentioned information is taken from: http://en.wikipedia.org/wiki/Destin-Fort_Walton_Beach_Airport.
The most common type of cascade type thrust reverser system in use today for an aircraft fan gas turbine jet engine employs a forward fixed cowl portion and a translating sleeve which carries a plurality of circumferentially arranged blocker doors on its inner skin surface.
Chimney Caps. Chimney caps, also called chimney covers, and or chimney cowls, are specifically made to protect and cover the chimney flue while preventing downdraft and creating proper ventilation for your stove or fireplace. These vent caps are made out of several different metals and models to satisfy a personal style, need and budget.