As Boeing’s T-7 chief test pilot continues logging flights and checking off outstanding test points for the company’s new tactical trainer jet to replace the aging T-38, the company is preparing to incorporate its engineering and manufacturing development aircraft into the demonstrations later this year. After surpassing 400 flight tests earlier this month using the two existing prototype jets, pilot Steve Schmidt said officials are dividing the remaining testing of the aircraft between St. Louis, where Boeing’s T-7 production line...