Keeping the Edge: Managing Defense for the Future 2001 HKS Authors See citation below for complete author information. Ash Carter Belfer Professor of Technology and Global Affairs Citation Carter, Ashton B., Marcel Lettre, and Shane Smith. "Keeping the Technological Edge." Keeping the Edge: Managing Defense for the Future. Ed. Ashton B. Carter and John P. White. MIT Press, 2001, 129-164.