The House Armed Services strategic forces subcommittee is stepping into the Air Force's competition to build the Ground-Based Strategic Deterrent with a provision to block the engineering and manufacturing development contract award if the design includes fewer than 15 fixed launch control centers at each missile wing, unless the head of U.S. Strategic Command approves. "The committee is concerned about cost, schedule and technology maturity risks in the GBSD program, particularly as the program considers significant deviations from proven, reliable,...