Kelly Johnson (engineer) - Clarence Leonard "Kelly" Johnson (February 27, 1910 – December 21, 1990) was an American system engineer and aeronautical innovator. He earned renown for his contributions to many noteworthy aircraft designs, especially the Lockheed U-2 and SR-71 Blackbird spy planes, but also including the P-38 Lightning, P-80 Shooting Star, and F-104 Starfighter, among others.
KISS (Keep it simple, stupid) - The acronym was reportedly coined by Kelly Johnson, lead engineer at the Lockheed Skunk Works (creators of the Lockheed U-2 and SR-71 Blackbird spy planes, among many others).
Clarence "Kelly" Johnson, founder of Lockheed's "Skunkworks" division, was one of most prolific aircraft engineers—designing the Constellation, the U-2 + the SR-71. His personal motto (and later the division's): "Be quick, be quiet, and be on time."
Kelly Johnson's name, like Ed Heinemann's, has become attached to certain aircraft that are commonly referred to as "his," but as this image shows these men worked with teams of talented engineers and other specialists whose names and contributions we will likely never know.