Air Force acquisition officials now expect to announce the winner of its next-generation aerial tanker platform competition by the end of 2007, nearly three months behind the service's originally anticipated award date, according to sources and documents. The revamped source selection time line was part of a nine-page briefing on the KC-X aerial tanker effort delivered to staff members of the House Armed Services air and land subcommittee on July 31 by Air Force deputy acquisition czar Lt. Gen. Donald...