Two Air Canada Boeing 737 Max 8 aircraft (Left and Right) are seen at Vancouver International Airport in Richmond, Vancouver, Canada, March 13, 2019. Canada is grounding all its Boeing 737 Max 8 and 9 aircraft and banning the jets from its airspace following the Ethiopian Airlines crash that killed all 157 people on board, including 18 Canadians. (Xinhua/Liang Sen)