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.
For other uses, see Caul (disambiguation). A caul or cowl (Latin: Caput galeatum, literally, helmeted head) is a piece of membrane that can cover a newborn's head and face. Birth with a caul is rare, occurring in fewer than 1 in 80,000 births. The caul is harmless and is immediately removed by the physician or midwife upon delivery of the child. The en-caul birth, not to be confused with the caul birth, occurs when the infant is born inside the entire amniotic sac. The sac balloons out at birth, with the amniotic fluid and child remaining inside the unbroken or partially broken membrane.