The exact cause of Barrett's esophagus is not known. It may result from damage to the esophagus caused by the chronic reflux of stomach acid. Frequent or chronic reflux of stomach acid into the esophagus is called gastroesophageal reflux disease or GERD. Gastroesophageal Reflux.
YYC Calgary International Airport, originally named McCall Field (IATA: YYC, ICAO: CYYC), is the international airport that serves Calgary, Alberta, Canada and the surrounding region; it is situated approximately 17 km (11 mi) northeast of downtown Calgary.
International Airports in Alberta. Albertaâs airports are among the busiest in the country. Calgary is the hub for air traffic on the prairies, while Edmonton is the Gateway to the North.. Both have 24-hour cargo service and modern cargo terminals run by Air Canada and International Aviation Terminals Inc.