 He retired from the Air Force on February 1, 2009 and continued to serve NASA as a civilian.Johnson was the pilot of STS-134, the final flight of Space Shuttle "Endeavour" and the penultimate flight of the Space Shuttle Program.Johnson has been awarded the 2005 Stephen D. Thorne Top Fox Safety Award, the 2005 Dean's Award for Academic Excellence, McCombs School of Business, NASA Superior Performance Award, and the 1996 Lieutenant General Bobby Bond Award for the top Air Force test pilot.