Robert L. Riedenauer, a test pilot who flew top-secret aircraft that were later used in military missions, died after a long battle with cancer, his wife said. He was 70.
Riedenauer died April 23. A retired Air Force lieutenant colonel, Riedenauer spent his lengthy military career flying aircraft that were under development, including the high-flying U-2 and SR-71 Blackbird spy planes.
After leaving the Air Force, he worked for Lockheed Martin’s renowned Skunk Works design unit. Riedenauer was listed as one of Lockheed’s principal test pilots during the initial flight tests of the F-117 stealth fighter....