The Air Force's B-1 bomber fleet is officially no longer capable of carrying nuclear payloads, in compliance with one of the early stages of the follow-on Strategic Arms Reduction Treaty signed with Russia last year, senior service officials told lawmakers today. Maj. Gen. David Scott, the Air Force's deputy chief of staff for operations, plans and requirements, told the Senate Armed Services strategic forces subcommittee this afternoon that as of last week, the service's B-1 fleet is only capable of...