sentences:  Its primary RCAF lodger unit is 17 Wing, commonly referred to as 17 Wing Winnipeg.One of the facilities at CFB Winnipeg is the Billy Bishop Building which houses the headquarters of 1 Canadian Air Division (1 CAD) as well as the headquarters of Canadian North American Aerospace Defense Command (NORAD) Region.Established in 1922 by the federal government's Canadian Air Board (a two squadron Canadian Air Force formed in 1918 was disbanded in 1920), Winnipeg was opened as an aerodrome and became known as RCAF Station Winnipeg in 1925 after the Royal Canadian Air Force was formed the previous year from the second Canadian Air Force
  
  Initially, the base served as a winter home for units that operated across northern Manitoba.