The head of Air Force Global Strike Command said he expects the Pentagon to settle on a materiel solution for replacing or upgrading the Minuteman III nuclear intercontinental ballistic missile system within 15 months. The Air Force has completed a study into options for a follow-on ICBM system and the Office of the Secretary of Defense is vetting the results. The follow-on solution, known as the Ground-Based Strategic Deterrent, would keep the ICBM portion of the nuclear deterrent viable through...