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.
A Cowl Neckline is similar to the turtle neckline except that a Cowl-neck incorporates a greater amount of extra fabric, hanging in a scooping fashion, on the neck-line. The neckline features folded fabrics that are wider and that drape looser than the close-fitting turtle-neck ones.