Tim Dues presents a plaque to Gen. Bruce Carlson to commemorate the Air Force's certification of Fischer-Tropsch fuel blends in the B-52H. Mr. Dues, the deputy director for maintenance within the Logistics Directorate at Headquarters Air Force Materiel Command, offered the plaque to General Carlson, the AFMC commander, on behalf of the B-52 Synthetic Fuel Initiative Team during a Dec. 21 meeting at Headquarters AFMC. (Air Force photo)