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.
In the United States commercial airports are generally operated directly by government entities or government-created airport authorities (also known as port authorities), such as the Los Angeles World Airports authority that oversees several airports in the Greater Los Angeles area, including Los Angeles International Airport. In Canada, the federal authority, Transport Canada, divested itself of all but the remotest airports in 1999/2000.