STOCKHOLM, Aug. 10, 2018 /PRNewswire/ -- The government of Sweden signed an agreement to purchase Raytheon's (NYSE: RTN) Patriot™ air and missile defense system from the U.S. Army. The agreement, formally referred to as a Letter of Offer and Acceptance, paves the way for Sweden's Patriot force to rapidly reach Initial Operational Capability. "Sweden and 15 other STOCKHOLM, Aug. 10, 2018 /PRNewswire/ -- The government of Sweden signed an agreement to purchase Raytheon's (NYSE: RTN) Patriot™ air and missile defense system from the U.S. Army. The agreement, formally referred to as a Letter of Offer and Acceptance, paves the way for Sweden's Patriot force to rapidly reach Initial Operational Capability. "Sweden and 15 other