source:[1] Boeing stock target cut at Jefferies as 777X certification falls behind schedule (https://finance.yahoo.com/news/boeing-stock-t ...)[2] Boeing 777X delays could push 1st deliveries to 2027 - Aerospace Global News (https://vertexaisearch.cloud.google.com/groun ...)[3] Boeing's Orberg: Striving for parity with Airbus deliveries - Leeham News and Analysis (https://vertexaisearch.cloud.google.com/groun ...)