The head of Lockheed Martin's Ground-Based Strategic Deterrent effort said this week the Air Force plans to have as many as two companies on contract in September, and he sees no indication the service will delay that goal, despite asking for more details on bidders' proposals, an upcoming nuclear posture review and scrutiny by the executive and legislative branches. John Karas, Lockheed's GBSD vice president and program manager, told Inside the Air Force in a March 21 interview the Air...