Focus on developing a new electromagnetic rail gun has shifted toward advancements in a Hypervelocity Gun Weapon System based on existing powder guns because of “revolutionary” capabilities that demonstrate the HGWS is "blurring the domain" between artillery and missile defense for a fraction of the cost, according to one of the Pentagon's top weapons developers. Will Roper, chief of the Strategic Capabilities Office, said during a Wednesday appearance at the Center for Strategic and International Studies that it was his...