The Missile Defense Agency plans by the end of the summer to select two companies to draw up competing approaches for developing a Glide Phase Interceptor -- a new Aegis-compatible missile -- as part of a Pentagon plan to accelerate fielding within the decade of a capability to defeat adversary hypersonic glide vehicles during the regional phase of flight. MDA Director Vice Adm. Jon Hill said the agency is reviewing "some really good" industry proposals prepared in response to a...