Raytheon, a unit of RTX Corp. RTX, has expanded its partnership with Avio USA to accelerate development of the Mk 104 dual-thrust rocket motor, a critical component of the company's Standard Missile program. The two firms executed a purchase order worth up to $26 million to fund engineering and production work.The order, which comes just over a year after the initial contract, will cover Critical Design Review milestones, acquisition of long-lead materials, and boost manufacturing capacity for solid rocket ...