The Air Force is looking to the 2001 Quadrennial Defense Review to address problems associated with a rapidly aging aircraft fleet, a senior service official said this week. Large numbers of new aircraft are needed to recapitalize the force. "It's not just about liking new equipment, but about what happens as our fleet ages," Brig. Gen. David Deptula said. "The F-15C force is approaching an average of 20 years old. The average age of our tanker fleet is 38 years...