In the April 2014 issue of Aviation News, Bob Archer told the story of Lockheed Constellations in US Air Force service.
Lockheed’s Constellation emerged from a Transcontinental and Western Air (TWA, or Trans World Airlines from May 1950) requirement for a deluxe airliner capable of flying non-stop across the USA at an altitude above the worst of any air turbulence to ensure a comfortable passenger experience. It would therefore be pressurised and boast high performance.