Staff Sgt. Joe Wallis and Johnny Sniderhan reveal the Fischer-Tropsch synthetic fuel blend certification logo painted on the side of a B-52H Stratofortress at the certification ceremony at Edwards Air Force Base, Calif., Aug. 8. Sergeant Wallis is with the 31st Test and Evaluation Squadron; Mr. Sniderhan is with the 912th Aircraft Maintenance Squadron. (U.S. Air Force photo/Jet Fabara)