Introduction. Epiglottitis is inflammation and swelling of the epiglottis. In most cases, it's caused by infection. The epiglottis is a flap of tissue that sits beneath the tongue at the back of the throat.Its main function is to close over the windpipe (trachea) while you're eating, to prevent food entering your airways.he epiglottis is a flap of tissue that sits beneath the tongue at the back of the throat. Its main function is to close over the windpipe (trachea) while you're eating, to prevent food entering your airways.
Airport authority. An airport authority is an independent entity charged with the operation and oversight of an airport or group of airports. These authorities are often governed by a group of airport commissioners, who are appointed to lead the authority by a government official. When the authority of an entity encompasses more than just the airports in an area, harbor and rail facilities for example, the entity may be referred to as a port authority. In Canada, airport authorities usually refer to private (not government owned or affiliated) not-for-profit companies that are established to manage a city's commercial airports.
U.S. law defines an airport as âany area of land or water used or intended for landing or takeoff of aircraft including appurtenant area used or intended for airport buildings, facilities, as well as rights of way together with the buildings and facilities.â This definition is the common denominator for the 19,299 airports in the United States. This includes seaplane bases and heliports, counted in 2014 (the most recent data) by the DOTâs Bureau of Transportation Statistics. Of that number, only 5,145 are public use; 13,863 are private; and the military owns 286.