Boeing adds to big week with first full-rate Grey Wolf helicopter order

The U.S. Air Force has ordered four more MH-139A Grey Wolf helicopters, the first under full-rate production, Boeing said Thursday , just weeks after the service declared the aircraft ready for its nuclear missile security mission. The announcement comes during a busy week for Boeing. On Tuesday, the U.S. Navy selected the company to build its F/A-XX sixth-generation carrier-based fighter under a development contract worth more than $20 billion. The same day, the Air Force signed a $2.38 billion order for 22 more F-15EX Eagle II fighters. The Grey Wolf contract, worth roughly $85 million and…