Boeing revised up long-term demand forecasts on Tuesday, as a snapback in commercial air travel in domestic markets like the United States tempers the more gloomy industry predictions seen at the height of coronavirus lockdowns last year. The rosier view underpins moves by the aerospace giant to prepare for growth in travel demand and military services, even as its own ability to respond to the brighter outlook remains hampered by industrial delays and the lingering 737 MAX crisis. The U.S. planemaker, which dominates jet sales together with Europe’s Airbus, forecast 43,610 commercial jet deliveries over the next 20 years worth $7.2 trillion, an increase of 500 units from the 43,110 projected a year ago. On a shorter 10-year view, which is more sensitive to the severe fallout on airlines from the COVID-19 pandemic, Boeing sees 19,330 deliveries, up from last year’s forecast of 18,350. The 10-year projection is 6 percent …